That the Schlieffen plan failed, The French were unable to defeat the Germans completely at the Battle of the Marne.
Assuming this is referring to the Greensboro sit ins, it started a chain of sit ins at restaurants. The 4 African American college students were the first to challenge the segregation inside restaurants. They sat in at one, which led to others being inspired and joining in by sitting in at other restaurants.
It would be "debt" because farmers were always in debt when their farms weren't doing the best
The relations between them were friendly. Tribes provided food, clothing and shelter for the dependent settlers in exchange for metal tools like knives and hatchets.