By defeating Germanic invaders
Answer: Muslim
Explanation
1. the root language that west african people spoke was Arabic
2. the historical city was a major goal of the crusades was Jerusalem
3. the asian nation had a similar feudal system to that of western Europe is Japan
4. following groups of people did not participate in trade along the Swahili Coast of East Africa is Bantu Swahili
5. the ottomans were Turkic people from central Asia and Anatolia
Basically, before 1973, the president had more power over the military and had more freedom to command the military as the president wished. This was seen in Vietnam which turned out to be a disaster. It was decided to limit the president's military power, and he would need the consent of congress to whatever operation he planned to do.
summary: limit president's military power