their reason is to take over the island to expand their military population and use the islands as their own place to attack the u.s.
Japan thought the U.S.A was trying to stop their expansion.
to stop Japanese expansion
the Japanese expansion of the 1930s was to expand out of Korea and into manchuria which it annexed and call manchukou
The question as written makes no sense. Japanese-Americans did not perform imperial expansion. The Japanese and the Americans both engaged in imperial expansion individually and for different motives.
to stop Japanese expansion
Japanese expansion into material rich regions.
The Axis Powers (:
Russian & Japanese expansion plans in that region, led to a clash.
Japanese expansion in the early to mid-20th century was driven by a desire to secure natural resources and raw materials to support industrialization, as well as a quest for geopolitical influence and power in the region. It was also fueled by a belief in Japanese racial superiority and a desire to establish a Greater East Asia Co-Prosperity Sphere under Japanese control.
Japanese expansion into Eastern Asia began with the invasion of Manchuria in 1931. It also created a separate puppet state in Inner Mongolia. The Chinese Nationalist capital of Nanking also surrendered to the Japanese in 1937. The Japanese killed as many of 300,000 Chinese in the Massacre of Nanking.
The Japanese expansion policy was motivated by a lack of natural resources.
Two answers to this (both are correct):1. To Destroy ships and planes that threatened their expansion efforts.2.The attacks was to prevent Americans from mounting a strong resistance to Japanese expansion.