Complex sentence: He established an exiled government in the U.S. with the outbreak of the war and the threat of Japanese invasion, and during his exile in the U.S. he died of tuberculosis at Saranac Lake, New York.
Split into simpler sentences: He established an exiled government in the U.S. with the outbreak of the war and the threat of Japanese invasion. It was during his exile in the U.S. that he died of tuberculosis at Saranac Lake, New York.