Complex sentence: In 1965, Hoàn had a dispute with French President Charles de Gaulle over the country's Vietnam policy and immigrated to the U.S. He taught Vietnamese at American military complexes and then opened a Vietnamese restaurant.
Split into simpler sentences: In 1965, Hoàn had a dispute with French President Charles de Gaulle over the country's Vietnam policy and immigrated to the US. Hoàn taught Vietnamese at American military complexes and then opened a Vietnamese restaurant.