Answer:
Between 1920 and until the early 1940s, the only communist country was the Soviet Union, where the first communist revolution, led by Vladimir Lenin, was successful in 1917.
From the early 1940s onward, communism began to expand rapidly to many areas in the world. For example, after the end of World War II, the Soviet Union expanded communism in Eastern European Countries like Poland, Hungary, and Romania, where it installed puppet governments.
In 1949, another important country became comunist: China. Led by Mao Zedong, the Chinese communists won the civil war against the Chinese nationalists (the Kuomintang, who later fled to Taiwan). In the same year, the Chinese People's Republic was proclaimed.
Answer:
As demographic changes began occurring, people became more aware of the importance of this new area as it was growing rapidly and natural resources were abundant.
Due to the new metal and iron, this area was now armed with weapons.
These groups eventually moved to southeastern Europe, the Aegean, the Mediterranean, and southwest Asia. These migrations took over the weaker populations such as the Egyptians and Minoans.
Natural changes like droughts and dust storms forced the Zhou people to settle on the edges and eventually they lost their dynasty.
