After the outbreak of World War I, he became the head of the Commission for Relief in Belgium, an international relief organization that provided food to occupied Belgium. When the U.S. entered the war, President Woodrow Wilson appointed Hoover to lead the Food Administration, and Hoover became known as the country's 'food czar'. Herbert Hoover was born on August 10, 1874 in West Branch, Iowa. His father, Jesse Hoover, was a blacksmith and farm implement store owner of German, Swiss, and English ancestry. Hoover's mother, Hulda Randall Minthorn, was raised in Norwich, Ontario, Canada, before moving to Iowa in 1859. He made recommendations to improve the lot of the Chinese worker, seeking to end the practice of imposing long-term servitude contracts and to institute reforms for workers based on merit. The Boxer Rebellion broke out shortly after Hoover arrived in China, trapping the Hoovers and numerous other foreign nationals until a multi-national military force defeated Boxer forces in the Battle of Tientsin.