Which describes the sahara
a. covered with sand dunes, rocky hills and gravel.
b. strip of dry grassland
c. has dry and rainy seasons
d. lots of vegetation and wide variety of animals.

New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.

Alexander hamilton was one of the most important of the founding fathers. which of the following is he responsible for? select all that apply.

Which of the following statements best describes the concept behind labor unions?