In Africa, the English reinforced their domination from north to south of the continent, and in Asia, where they channeled Russia (defeated during the Crimean War between 1853 and 1856), they seized the Indian subcontinent and began to to take hold in a declining Chinese Empire.
Egypt and Sudan
In 1875, Disraeli bought for Great Britain the Egyptian shares of the shares of the Suez Canal and opened the route to India. In 1882, the British placed Egypt under their tutelage and put down the Islamist revolt of Al-Mahdi in Sudan between 1881 and 1884.
South Africa
After the conquest of the Zulu kingdom in 1879, Great Britain confronted the Boers (or Afrikaners) in 1880-1881 and in 1899-1902 and thus put an end to the independence of the republics of Transvaal and Orange, founded by Dutch settlers.
The Middle East
Fear of Russian expansion in Asia pushed the United Kingdom to lead the Afghan wars of 1839-1842 then 1878-1880, at the end of which Afghanistan, although independent, saw its foreign policy go under British control.
The Indies
After putting down the revolt of the sepoys (Indian soldiers in the service of the English) in 1857, the United Kingdom withdrew the government of India from the East India Company. He also ended up annexing Burma, after three wars fought from 1824 to 1885.
China
After the First Opium War (1839-1842), Hong Kong was ceded to the United Kingdom, which forced China to open its market to foreigners. The Second Opium War (1856-1860) and the Boxer Rebellion (1899-1901) sealed this submission.