Which accurately describes a chart developed 20 years after a historical event?

effective secondary source document

too biased for historical evidence

too focused for historical evidence

unreliable narrative source

useful primary source document

How did the southeast asia treaty organization (seato) carry out the united states policy on containment? a. seato promoted the creation of united nation military bases to create regional defense. b. seato founded an organization seeking to educate southeastern asian countries on communism. c. seato established a regional economic union to promote monetary security. d. seato sought to provide regional security in southeast asia by establishing alliances.