Answer:
There were 3
Explanation:
Skylab was the first United States space station, launched by NASA, occupied for about 24 weeks between May 1973 and February 1974. It was operated by three separate three-astronaut crews: Skylab 2, Skylab 3 and Skylab 4.
The Immigration Act of 1924 was considered outdated by the 1960s because immigration patterns were changing.
The European imperialism in Africa and Asia led to control over these areas and the people living in them by foreign forces. The Europeans were using the natural resources, controlled the economy, the society, used military power, and were occupying the high governing positions. On the other side, the native people were treated as lesser beings, often being stripped of their basic human rights, segregated in most things, and without any hope of prospering. This kind of situation led to the people of these areas that once were not in good relations to start uniting and acting together in order to get rid of the foreign rulers. Very quickly that led to the development of strong nationalist feelings and pride, which gradually was making the things harder and harder for the imperialists and the end result was the formation of modern day nations in Africa and Asia.
Answer:
people invaded other countries and traded, spreading language and customs
