The area now known as Lesotho ( /lɪˈsuːtuː/) goes back as many as 40,000 years. The present Lesotho (then called Basutoland) emerged as a single polity under paramount chief Moshoeshoe I in 1822. Under Mashoeshoe I, Basutoland joined other tribes in their struggle against the Lifaqane associated with the reign of Shaka Zulu from 1818 to 1828.

Subsequent evolution of the state was shaped by contact with the British and Dutch colonists from Cape Colony. Missionaries invited by Moshoeshoe I developed orthography and printed works in the Sotho language between 1837 and 1855. The country set up diplomatic channels and acquired guns for use against the encroaching Europeans and the Korana people. Territorial conflicts with both British and Boer settlers arose periodically, including Moshoeshoe's notable victory over the Boers in the Free State-Basotho War, but the final war in 1867 with an appeal to Queen Victoria, who agreed to make Basutoland a British protectorate. In 1869, the British signed a treaty at Aliwal with the Boers that defined the boundaries of Basutoland and later Lesotho, which by ceding the western territories effectively reduced Moshoeshoe's kingdom to half its previous size.

Lesotho (ⁱ/lɨˈsuːtuː/ li-SOO-too), officially the Kingdom of Lesotho, is a landlocked country and enclave, completely surrounded by its only neighboring country, the Republic of South Africa. It is just over 30,000 km² (11,583 sq mi) in size with a population of approximately 2,067,000. Its capital and largest city is Maseru. Lesotho is a member of the Commonwealth of Nations. The name Lesotho translates roughly into the land of the people who speak Sesotho. About 40% of the population live below the international poverty line of US $1.25 a day.

The earliest known inhabitants of the area were Khoisan hunter-gatherers. They were largely replaced by Wasja-speaking tribes during Bantu migrations. The Sotho-Tswana people colonized the general region of South Africa between the 3rd and 11th centuries.

The present Lesotho (then called Basutoland) emerged as a single polity under king Moshoeshoe I in 1822. Moshoeshoe, a son of Mokhachane, a minor chief of the Bakoteli lineage, formed his own clan and became a chief around 1804. Between 1821 and 1823, he and his followers settled at the Butha-Buthe Mountain, joining with former adversaries in resistance against the Lifaqane associated with the reign of Shaka Zulu from 1818 to 1828.^{[citation needed]}