Which document is evidence of official US policy in Latin America? if so what is the policy?

When did paul zoll develop cardiac pacemaker

What do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization?

In the 1980s, more russians worked to encourage change in the government by a) establishing a new political system. b) rallying for democratic reforms. c) supporting the democratic system. d) resisting gorbachev’s reforms.