5effects of building the transcontinental railroad?

In one to two paragraphs, compare and contrast the american, french, and mexican revolution.

How has u. s. participation in international economic development efforts affected other countries? o a. it has made some countries decide they no longer want close ties with the united states. b. it has ended diplomatic ties with countries that refuse to participate. c. it has raised money to poor nations grow their economies. d. it has caused the united states to intervene militarily to stop human rights abuses.

The byzantine empire weakened after asia minor