Who was the fourth (4th) person that was considered to be part of the conspiracy to assassinate President Lincoln

In shifting to a defense policy based upon the concept of "flexible response," president kennedy was indicating that he had grave doubts about thevalue of which previous defense policy? a massive retaliationb collective securityc containmentd air power

Explain one major pattern of cultural interaction between nomadic and sednetary socities in afro eurasia before 1450 ce

How did europeans and africans displace native americans in north america’s predominant peoples?