Answer:
The world benefits from this because it brings new animals and food to different countries. However, it regresses because it also brought diseases to the other countries which can cause death or in other words, is bad for humanity. So the contemporary trade exchanges sometimes help innovations for humanity.
Explanation:
As mentioned above.
Designating additional land as national parks
Answer:
The domino theory is basically ,if one new country went communist in Asia then it would begin a chain reaction that would cause several more Southeast Asian countries becoming communist. it was the reason the united states went into the Vietnam war. since everyone was becoming a communist no laws were really set so they went into war. As the Vietnam War escalated, America's leaders and soldiers found themselves in a quagmire with no victory in sight. Eventually the war weakened the American economy, divided the people, and eroded the nation's morale.
Explanation:
The correct answer is the Berlin Wall.
The Berlin Wall was built in 1961 in order to separate West Berlin, which was controlled by the US, France, and Great Britain, from East Berlin (which was controlled by the Soviet Union). This wall split up families and became a significant piece of symbolism during the Cold War era. This wall symbolized the stark differences between the United States and Soviet Union on how a society should be run, as East and West Berlin were run in two completely different ways.
