How did western expansion contribute to the secession of southern states, including south carolina

How did inovations in manufacturing lead to improvments in transportation?

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.

Which of the following is a claim about ancient rome that a historian could build san argument around