In the 1980’s, which countries were entrenched with civil war?
a. north american countries
c. central american countries
b. south american countries
d. none of the above
nafta was signed by all of the following countries, except
a. mexico.
c. the united states.
b. canada.
d. cuba.

In the 1980's the Central American countries were entrenched with Civil War. The correct option among all the options that are given in the question is option "b".

NAFTA was signed by all of the following countries, except Cuba. The correct option among all the options that are given in the question is option "d".

River valleys were good places for hunting and fishing.