Slavery in the colonial United States Slavery in the colonial United States Slavery in the colonial area which later became the United States (1600–1776) developed from complex factors, and researchers have proposed several theories to explain the development of the institution of slavery and of the slave trade. Slavery strongly correlated with Europe's American colonies' need for labor, especially for the labor-intensive plantation economies of the sugar colonies in the Caribbean, operated by Great Britain, France, Spain, and the Dutch Republic. Most slaves who were brought or kidnapped to the Thirteen British colonies - the Eastern seaboard of what later became the United States - were
Japanese declaration of war on the United States and the British Empire as a pretext for imperialism. In response, the U.S. imposed an oil embargo on Japan in August 1941 to stop aiding their aggression in Asia and to contain Japanese actions such as their war crimes in Nanking. Japan saw this as a hostile and provocative act, and retaliated with the bombing of Pearl Harbor and the declarations of war on the US and the British Empire. Japanese declaration of war on the United States and the British Empire The declaration of war by the Empire of Japan on the United States and the British Empire was published on December 8,