Can some one help me with this 4 questions

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.

Need it now explain gorbachev’s policy of glasnost. how did this policy change the soviet union?

The american civil war most former enslaved african americans in texas began making a living as