Answer:
However, during the 1930s, as Japan embarked on an increasingly authoritarian and militaristic political course, this relationship began to sour. In 1931, Japan seized Manchuria; by 1937, it had started an all-out war with China, massacred the city of Nanjing, and brazenly attacked a U.S. gunboat evacuating American nationals from that country. Though most Americans still opposed a war with Japan, anti-Japanese sentiment rose steadily throughout the 1930s, and, believing that the security of the United States was tied to peace and democracy abroad, Roosevelt resolved to dissuade Japan from continued aggression.
Explanation:
