Why were motte and bailey castles replaced by stone castles?

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries

The north was victorious in the battle of bull run true or false

Which of the following scenarios best shows the relationship between personal and civic responsibility? tara stays home on friday night to babysit her sister instead of going to a movie with her friends. theo asks neighbors to sign a petition asking the city council to lower the speed limit in their neighborhood to make it safer for children. natalie watches a presidential debate with her parents in order to complete a homework assignment for school. nick’s scout troop adopts a section of highway in their community to keep free from litter.