The British are a nation with developed industries and a small agricultural population. Agriculture is dominated by animal husbandry, mainly cattle raising, followed by pigs, sheep and poultry; Crops include wheat, barley, oats and other grains, as well as various fruit trees and vegetables in the suburbs. From 17 to 19, a large number of English people emigrated overseas and became the main components of Americans, British Canadians, Australians and New Zealanders. According to the statistics of 1978, there are about 4.75 million Britons in South Africa (1550,000), Australia (830,000), Canada (650,000) and the United States (620,000).