How did stone age cultures interact with their environment a: they depended on their physical environment to provide food. b: they used only their hands, not rocks or stones to hunt animals. c: they built homes in caves, which they refused to leave before they died. d: they controlled their environment to produce their own food.

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.