Which cause problems for the us military has attempted to carry out the war in vietnam

if you're asking what hindered the US from winning in Vietnam it was cause of multiple factors

first one and probably the biggest is that the war was unpopular back in the US most of the population found it to be a pointless war

second reason would be that the Soviets and us Chinese were training equipping and supporting the Viet Kong

third reason would be that the Viet Kong were excellent guerrilla fighters and knew the land better than the American GIs

b.provides a written record of the transaction

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.