East Africa being Egypt, I'm pretty sure and it depends on what time period but the silk Road went right through east Africa so trade was probably really quick thanks to the silk road and the connection between the middle east and Africa...
A person who holds duties rights and responsibilities within a state is called a citizen. Citizens should be legally-recognized member of the state to freely experience the services of the government. They are obligated to follow and serve every rights, obligations, and laws of their government.
Having been driven east by Axis forces in 1942, the British had established a strong defensive line at El Alamein, Egypt. ... Launched in October, the Second Battle of El Alamein saw British forces grind through the enemy defenses before shattering the Italo-German lines
The stock market crash of 1929
America's view in the Vietnam was fear. Fear drove them to participate in the war. Why fear? They were afraid Vietnam would become communist because if they became communist they would support or have the support from the Soviets. If this were to happen Vietnam could've became a missile launching spot for the soviets if America wouldn't have participated.
It's my best explanation from what I remember and from what I think. Hope it's helpful to you.