The Battle of Grand Gulf was fought on April 29, 1863, during th: Emigration was an important feature of British society in the 19th century. Between 1815 and 1930, around 11.4 million people emigrated from Britain and 7.3 million from Ireland. Estimates show that by the end of the 20th century, some 300 million people of British and Irish descent were permanently settled around the globe.[383] Today, at least 5.5 million UK-born people live abroad,[384][385] mainly in Australia, Spain, the United States and Canada.[384][386]