Before revision: The history of Baker Island began when the United States of America took possession of the island in 1857, and its guano deposits were mined by US and British companies during the second half of the 19th century.
After revision: The history of Baker Island began when the United States of America took possession of the island in 1857, and its guano deposits were mined by U.S. and British companies during the second half of the 19th century.