Which of these was used during world war 1 to gather information about enemy position?

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

Which of these rose during the great depression? a migration b consumerism c membership in the republican party d employment

The first human skeleton found in oklahoma is estimated to be 9,000 years old. based on this age, which dates the skeleton to about 7,000 bce, the skeleton is most likely from the