I think the correct answer from the choices listed above is option 4. The refrigerator car is the invention which was most important in revolutionizing the meat industry. It <span>is a </span>refrigerated <span>boxcar, a piece of railroad rolling stock designed to carry perishable freight at specific temperatures.</span>
They brought diseases and killed Indians, but they started the course to the making of America.
They got to know with the photographs from the U - 2 spy plane.
<em>Hope this helped! :)</em>
The correct answer is C.
A is incorrect because the battles were not at sea and had nothing to do with ships.
C is incorrect because the Crusades had nothing to do with contributing money to the Church (but rather defending it against Muslims).
D is incorrect because, although knights did wear these crosses, they, alone, were not the Crusades.
