Help pls!
How did the transcontinental railroad affect US trade?
A-The railroad did not affect trade in the United States.
B-The railroad increased trade by making shipping cheaper.
C-The railroad hurt trade by causing corruption in business.
D-The railroad fostered trade relations with American Indians.

2points which option best completes the diagram? humanitarian aid as a tool of foreign policy the united states provides humanitarian aid to rebuild after an earthquake. the country supports u.s. interests. o a. more educated citizens are more likely to create a democratic government o b. the citizens and government have a positive attitude toward the united states. o c. more prosperous citizens have money to spend. o d. the country's government discovers a new natural resource.