Japan invaded the entire area around East and Southeast Asia.
Japan
The agression tooken by Japan in 1930 was that japan invaded china.
By the 1930's Japan had already occupied most of China's East Coast. In 1941/1942 they invaded Southeast Asia, the Pacific Islands north of Australia, and parts of the current state of Alaska.
During World War II, Japan invaded quite a few countries in their offensive 'blitz' across Southeast Asia and the Pacific Ocean region. For example, Japanese troops invaded American territory in various islands in the Pacific. They also invaded British (imperial) territory in Burma and elsewhere. Furthermore, Dutch territory in Borneo and Java (among other regions) were also invaded by Japan.
China and the islands in the Pacific were invaded by Japan during WWII.
Well, the involvement was that the entire area was invaded by Japan. Large portions of China and Korea were occupied by the Japanese. Many of the island nations, including the Philippines were invaded by the Japanese. In most cases large groups of natives worked with US and British forces to establish undergrounds and guerrilla forces to fight the Japanese.
Japan .
japan
1. One of the countries that Japan invaded was China 2. The secound country that japan invaded was Manchuria which is north eastern China.
During WWII, Japan occupied Southeast Asia. Vietnam is part of Southeast Asia.
Because Japan invaded China, and Japan was an axis power.