What invention effectively ended the era of the "long drives of the late 19th century?
A.) barbed wire
B.) the cotton gin
C.)the steel plow
D.)the refrigerated box car

the fundamental orders of connecticut it would be the letter b

the answer is d because for c the actors can't love acting for the other's audience their not even in the same show, it can't be b either because the question is talking about the actors not the audience, and it can't be a because   it's not specific enough