When the region of Biafra broke away from Nigeria in 1967, Achebe became a devoted supporter of Biafran independence and served as ambassador for the people of the new nation. The war ravaged the populace, and as starvation and violence took its toll, he appealed to the people of Europe and the Americas for aid. When the Nigerian government retook the region in 1970, he involved himself in political parties but soon resigned due to frustration over the corruption and elitism he witnessed. He lived in the United States for several years in the 1970s, and returned to the U.S. in 1990 after a car accident left him partially disabled.