Answer: 1, 4, 6
Explanation: I just did it in edg.
The correct awncer is because
Marco Polo traveled during the middle ages (AP period 3), for this the communication technology was not very advanced and Western Europe didn't really know the situation of East Asia and vice versa. When Marco Polo explained his travels to the Europeans of the greatness of China many Europeans decided to go and see for themselves if this greatness was indeed true. When the Europeans arrived in China they were very impressed and a new promotion of travel to China emerged, INCREASING China's economy.
Some of the effects include different culture being introduced to the nation
Also it may teach some people to either be racist / prejudice or kind and accepting
The growing diversity can bring division and could also bring union depending on how current citizens act towards them
"Peace with Honor" was uttered by U.S. President Richard M. Nixon on January 23, 1973 to describe the Paris Peace Accord that helped end the Vietnam War. The treaty specified that a ceasefire would take place four days later. It was stipulated there that the North Vietnamese would release all U.S. prisoners, and all U.S. troops would withdraw from South Vietnam.
So the closest answer is (A) An exchange of prisoners of war with North Vietnam.