The agents of U.S. continental expansion were largely a. ...

[nevelica]

The agents of U.S. continental expansion were largely
 
  a. government agents. c. private citizens.
  b. the army. d. All of the above are true.

Question 2

The main difference between the physical and social sciences is
 
  a. it is more difficult to uncover the process of causation underlying correlation in the social sciences.
  b. physical science studies make greater contributions to cumulative knowledge building.
  c. everything can be held constant in the physical sciences and nothing can be held constant in social sciences.
  d. social sciences create better knowledge for humanity.

[dlook33]

Answer to Question 1

D

Answer to Question 2

A

[nevelica]

Thanks for the timely response, appreciate it

[duy1981999]

Gracias!