Cod has been a commercially important fish species since . a.
the 13th century
b.
the discovery of North America
c.
the 1960’s
d.
the 1980’s

nope.

explanation:

the answer is c. hope this

there are hundreds of postives ways to unite a country with another country here are a   few

1 peace treaty's peace treatys

are basically a document signing a allliance with one country and another.

2 gift

what i mean by this is for example how the french gave the americans the statue of libery a gift of peace.

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.