How did introduction of new crops to colonies improve the economy of imperialist countries?

answer; i believe that the correct answer is (tobacco);

the answer would be:

b. race

i think the fact that abraham lincoln was a tyrant

or probably like what the other person said from sitting in the chair to get assasinated xd

~batmans wife dun dun

your answer is 1930's

explanation

this is just around the time the great depression was starting and putting the us ecnomy into ecnomic failure causing the goverment to take a much larger rule to try and pieace it back together