What territories did Japan control in 1914? Why would having control of territory on the mainland be useful to the Japanese military in the 1930s?

In 1914, Japan controlled the Japanese Archipelago, the Korean peninsula, and the island of Taiwan. It also had control over the southern half of the Sakhalin Peninsula.

Japan's presence in mainland territory of Asia allowed it to extract raw materials and labor power from this places, to trade more easily with the surrounding areas, and these areas also served it as a base for further territorial expansion, which the country would engage in in the following two decades and until World War II.

these civilizations were located around fertile rivers, where they could produce an abundance of crops

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.