History of Tanzania: prehistory and antiquity, colonialism, wars and independence

Few countries have a history as long as Tanzania’s. Here, in the Olduvai Gorge and at Laetoli, some of the oldest fossils and traces of our ancestors have been found; along the coast, for over a thousand years, Swahili trading cities exchanged gold, ivory, and spices with Arabia, Persia, and India; then came the Portuguese, the Sultanate of Oman, German colonists, and British rule, leading up to independence in 1961 and the birth of Tanzania in 1964.

Knowing this history enriches the journey: many of the places you visit during a safari or a stay in Zanzibar bear direct witness to it. At the end of the article, you’ll find a brief timeline and the places where you can experience it firsthand.

The Cradle of Humanity: Olduvai and Laetoli

In the north of the country, between the Ngorongoro Crater and the Serengeti, lies the Olduvai Gorge, one of the world’s most important paleoanthropological sites. Beginning in the 1930s, Louis and Mary Leakey conducted excavations there that unearthed stone tools and hominid fossils dating back nearly two million years, including the famous Paranthropus boisei skull discovered by Mary Leakey in 1959 and the remains of Homo habilis.

A little further south, at Laetoli, Mary Leakey’s team discovered in 1978 a series of footprints left in volcanic ash by hominids walking upright about 3.6 million years ago, attributed to Australopithecus afarensis. They are among the oldest evidence of bipedalism.

Today, Olduvai is easy to visit during a safari, as it is located along the road between Ngorongoro and the Serengeti,within the Ngorongoro Conservation Area: a small museum on the edge of the gorge tells the story of the excavations and discoveries.

The First Peoples

For tens of thousands of years, the territory of present-day Tanzania was inhabited by groups of hunters and gatherers. Their descendants likely include the Hadzabe of Lake Eyasi and the Sandawe, whose languages—featuring “click” sounds—are among the most distinctive in Africa. Starting a few thousand years ago, Cushitic-speaking peoples arrived from the north, bringing with them pastoralism and agriculture; around the beginning of the Christian era, Bantu-speaking peoples—farmers skilled in working iron—spread across the region and today make up the vast majority of the population. Later, Nilotic-speaking herders also arrived, including the ancestors of the Maasai.

This diversity can still be seen today: Tanzania is home to over one hundred ethnic groups, united by Swahili as their common language. On a safari, you can encounter the Hadzabe and Datoga at Lake Eyasi and the Maasai communities in the Ngorongoro area.

The Swahili Coast and Trade in the Indian Ocean

As early as the 1st century A.D. a navigational manual written in Greek, the Periplus of the Erythraean Sea, describes the coast of East Africa and a trading post called Rhapta, whose exact location remains uncertain but which was likely situated on the coast of present-day Tanzania. The text tells of Arab merchants who spoke the local language and married local women.

In the centuries that followed, thanks to the monsoons that made it possible to cross the Indian Ocean in both directions, the coast became part of a vast trade network linking it to Arabia, the Persian Gulf, India, and even China. The encounter between the coastal Bantu communities and Muslim merchants gave rise to Swahili culture and language: a Bantu language rich in Arabic words, and an urban, Islamic civilization consisting of cities built of coral stone.

The most powerful of these was Kilwa Kisiwani, which controlled the trade in gold from the interior of the continent between the 13th and 15th centuries. The Moroccan traveler Ibn Battuta, who visited it in 1331, described it as one of the most beautiful and best-built cities he had ever seen. The ruins of Kilwa Kisiwani and nearby Songo Mnara are now UNESCO World Heritage Sites.

The Portuguese and the Sultanate of Oman

In 1498, Vasco da Gama sailed up the coast of East Africa during his voyage to India. In the following decades, the Portuguese attacked and plundered the Swahili cities, including Kilwa, and imposed their control over coastal trade, though they were unable to truly dominate the interior.

Their power declined in the 17th century, when the coastal cities sought help from the Sultanateof Oman. In 1698, the Omanis conquered Fort Jesus in Mombasa, the main Portuguese stronghold in the region, and from then on extended their influence along the entire coast. In 1840, Sultan Sayyid Said moved his capital from Muscat to Zanzibar, which became the center of a commercial empire. Upon his death in 1856, the kingdom split, and Zanzibar became an autonomous sultanate, ruled by his son Majid bin Said.

Under the sultans, Zanzibar grew wealthy thanks to two trades: cloves, grown on plantations on the island and on Pemba, and slaves, captured in the interior of the continent and brought to the coast along caravan routes that started in Bagamoyo and extended as far as Lake Tanganyika. The Zanzibar slave market was shut down in 1873 under British pressure; today, the Anglican cathedral and a memorial stand on the site, both of which can be visited in Stone Town. To explore the island, check out our guideto the Zanzibar Archipelago.

European Explorers

The interior of the country was not explored by Europeans until the mid-19th century. In 1848, the German missionary Johannes Rebmann became the first European to describe Mount Kilimanjaro, and many in Europe did not believe his account of a snow-capped mountain near the equator. In the years that followed, Richard Burton and John Hanning Speke reached Lake Tanganyika and Lake Victoria while searching for the sources of the Nile.

The Scotsman David Livingstone set out from Zanzibar in 1866 on his final expedition, and for years there was no word from him, until, in November 1871, the journalist Henry Morton Stanley found him in Ujiji, on the shores of Lake Tanganyika. In Stone Town, you can still see the house where Livingstone stayed before setting out.

German East Africa

In 1884, the German adventurer Carl Peters had several indigenous leaders sign treaties that the German government used the following year to declare a protectorate. Thus,German East Africa was established, comprising present-day mainland Tanzania, Rwanda, and Burundi, while Zanzibar came under British protectorate in 1890.

The conquest met with fierce resistance. In 1888, a revolt led by Abushiri broke out along the coast; in the interior, the Hehe chief, Mkwawa, fought the Germans for years, until his death in 1898. The Germans built railroads, roads, and plantations, but they did so through forced labor and taxes imposed on the population.

It was precisely the colonial administration’s requirement to grow cotton that sparked the Maji Maji Revolt in 1905, which began among the Matumbi people of the Rufiji River region and soon spread to much of the southern part of the country. The rebels believed that sacred water (maji in Swahili) would make them immune to bullets. The German crackdown, which lasted until 1907, was extremely brutal and included the deliberate destruction of villages and crops: between 75,000 and 300,000 people died as a result of the fighting and famine, according to estimates. The uprising is considered one of the first major unified resistance movements against colonialism in East Africa.

The First World War

During the First World War, East Africa was a veritable battlefront. German troops, led by General Paul von Lettow-Vorbeck and composed largely of African soldiers (the Askari ), defeated the British at the Battle of Tanga in November 1914 and waged a four-year guerrilla war against much larger forces. The British occupied the island of Mafia in 1915 and Dar es Salaam in 1916; Lettow-Vorbeck surrendered only in November 1918, after the end of the war in Europe.

The African people paid the highest price: hundreds of thousands of people were forced to work as porters for the armies, and the war brought famine and epidemics to many parts of the country.

Tanganyika under British administration

After the war, the main part of the German colony was entrusted to the United Kingdom—first de facto and then under a League of Nations mandate—under the name of the Territory of Tanganyika; Rwanda and Burundi, on the other hand, were transferred to Belgium. The British governed through local chiefs—a system known as indirect rule—and continued public works projects, including the railroads between Tabora and Mwanza (1928) and between Moshi and Arusha (1929). After World War II, Tanganyika became a United Nations Trust Territory, still under British administration.

Nyerere and Independence

In 1954, Julius Nyerere, a teacher and one of the first Tanganyikans to earn a degree abroad—at the University of Edinburgh—founded the TANU (Tanganyika African National Union), which led the country to independence peacefully. On December 9, 1961, Tanganyika became independent with Nyerere as prime minister; the following year, it became a republic, and Nyerere became its first president.

Zanzibar gained independence in December 1963 as a constitutional monarchy led by the sultan, but in January 1964, a violent revolution overthrew the sultanate. A few months later, on April 26, 1964, Tanganyika and Zanzibar united to form a single state, which in October of that same year took the name United Republic of Tanzania. Zanzibar still retains its own government and a high degree of autonomy today.

Ujamaa and the War with Uganda

With the 1967 Arusha Declaration, Nyerere launched a project of African socialism, called ujamaa (“family community”), based on collective villages and nationalizations. The program failed economically, but Nyerere’s policy succeeded in forging a shared national identity, with Swahili as the common language, which has made Tanzania one of the most stable countries in the region. In 1977, TANU and the Zanzibar party merged to form the Chama Cha Mapinduzi (CCM), which has governed the country continuously ever since.

In late 1978, the troops of Ugandan dictator Idi Amin invaded the Kagera region in the northwestern part of the country. Tanzania repelled the attack and launched a counterattack alongside Ugandan exiles: onApril 11, 1979, Kampala was captured, and Amin fled abroad.

Tanzania Today

In 1985, Nyerere voluntarily stepped down as president, handing over the presidency to Ali Hassan Mwinyi, while remaining the party’s leader until 1990. Under Mwinyi, the country opened its economy to the market and introduced a multiparty system in 1992; the first multiparty elections, held in 1995, were won by the CCM under Benjamin Mkapa. This was followed by the presidencies of Jakaya Kikwete and John Magufuli, who died in office in 2021 and was succeeded by Vice President Samia Suluhu Hassan, the country’s first female president. In October 2025, she was re-elected with over 97% of the vote according to official results, in an election contested by the opposition and followed by protests. Meanwhile, the official capital has moved from Dar es Salaam to Dodoma, where the parliament and ministries are now located, while Dar es Salaam remains the country’s economic center.

Essential Timeline

Where to Encounter History While Traveling

• Olduvai Gorge: a stop with a museum between Ngorongoro and the Serengeti, included in many itineraries through the northern parks.
• Stone Town, Zanzibar: the UNESCO-listed historic center, featuring the Slave Memorial, Livingstone’s House, and the sultans’ palaces. It pairs easily with a safari through our Tanzania and Zanzibar packages.
• Kilwa Kisiwani: the ruins of the largest medieval Swahili city, on the southern coast, among the islands of Tanzania.
• Lake Eyasi: an encounter with the Hadzabe, one of Africa’s last hunter-gatherer peoples.
• Dar es Salaam: the National Museum, featuring artifacts from Olduvai and exhibits on colonial history and independence.

To find out which of these places to include in your itinerary, check out our guide to what to see in Tanzania or write to us: we’ll tailor your trip to your interests.