The Battle of Grand Gulf was fought on April 29, 1863, during th: On 1 May 1707, the Kingdom of Great Britain was formed, the result of the Acts of Union 1707.[68] In the 18th century, cabinet government developed under Robert Walpole, in practice the first prime minister (1721–1742). A series of Jacobite uprisings sought to remove the Protestant House of Hanover from the throne and restore the Catholic House of Stuart. The Jacobites were finally defeated at the Battle of Culloden in 1746, after which the Scottish Highlanders were forcibly assimilated into Scotland by revoking the feudal independence of clan chiefs. The British colonies in North America that broke away in the American War of Independence became the United States, recognised by Britain in 1783. British imperial ambition turned towards Asia, particularly to India.[69]