What are you asking here?
Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
There were many areas where the US used an economic blockade. This is also known as an embargo, usually used to weaken a country at war. It gave several controls with assistance, ties, trade, and financial transactions are restricted.
The US used this in Cuba, which gave pressure to their economy. Iran, Sudan, North Korea, Russia.
During the cold war it made an economic blockade with
Democracy dates back to have started to develop in the days of Ancient Greece in the city state of Athens.
Not sure if this is what you were looking for but I hope it helps.
They influenced American Culture by questioning the existing state of affairs and contributing to the rise of the Civil Rights Movement.
<em>The Beat Generation</em> was a new cultural and literary movement in the 1950's. They were behind the concept of non-conformity, questioning the existing values and beliefs in America. They were against materialism, a society that relies heavily on consumerism and materialistic gadgets. They advocated sexual freedom, social equality ( gender and racial ,) and they were against wars. The spiritual quest during one's life was of great importance to them.
<em>Rock and roll</em> impacted American culture by breaking down racial barriers. Not only because of some black artists but also because of both races listening to the same type of music. The music became the voice of the young, united against the war and questioning racial inequality, supporting free thinking and the freedom of expression.