The colonial years from 1906 to the late 1940s saw Swaziland drift into a backwater of the British Empire. A fundamental reason was that provision had been made in the South Africa Act of 1909 (which established the Union of South Africa as a British dominion) for the possible eventual transfer of Swaziland (and Basutoland and Bechuanaland) to the union. While this possibility existed, no socioeconomic improvement took place, and it was difficult to distinguish Swaziland from the neighbouring rural areas of South Africa (there were no border posts). Politically, the situation was epitomized in the downgrading of the title of king to that of paramount chief and of his function to that of “native administration.” Despite a number of requests from South Africa over the years, however, the imperial power declined to transfer Swaziland. This resolution was stiffened by events in South Africa after the 1948 election, which heralded the onset of apartheid. Also, from 1945 onward, Britain had begun to tackle socioeconomic problems. By the mid-1950s the issue of transfer was dead, though the grand apartheid design of separate homelands for Africans still included Swaziland.

From 1960 the economy forged ahead steadily, but sociopolitical progress followed more slowly. A constitution providing for limited self-government was promulgated in 1963, and in 1967 the country became a protected state under which the kingship was restored. This was followed by full independence on September 6, 1968.

Eswatini since independence

King Sobhuza II of Swaziland was installed as the ngwenyama of the Swazi nation in 1921. The king jealously cherished and preserved Swazi traditions. Five years after independence, the king repealed the constitution designed by the British and restored the traditional system of government, in which all effective power remains in the royal capital. A system of local government, known as the tinkhundla, operates at the grass roots. Sobhuza’s concession to modern government was to retain the cabinet system with a prime minister and other ministers, but all are chosen by the king. Under his firm but benevolent rule, Swaziland enjoyed a remarkable degree of political stability and economic progress. Emphasis was placed on education—which had been neglected in colonial times—on health, and on other human resource developments.

King Sobhuza’s death on August 21, 1982, was followed by a power struggle within the royal family, which was not finally resolved until 1986, when the teenage heir, Prince Makhosetive, was installed as King Mswati III. His rule, characterized as autocratic and rife with corruption and excess, was beset with demands for democratic reform. Demonstrations and strikes were held during the 1990s and 2000s to protest the slow pace of progress toward democratic change. To appease his many critics, King Mswati III appointed a committee to draft a new constitution in 2001. Released for public comment in May 2003, it was criticized for falling short of democratic reform, as it banned opposition political parties and allowed the king to retain absolute governing powers. King Mswati III signed a revised version in 2005, effective in 2006, that neither banned political parties nor acknowledged their existence.

On April 19, 2018, King Mswati III announced that he was changing the official name of the country from the Kingdom of Swaziland to the Kingdom of Eswatini.