In What Way Did the Second Industrial Revolution Contribute to the Scramble

In what way did the Second Industrial Revolution contribute to the scramble for Africa?

A) It inspired Europeans to reflect more closely on their impact on the environment,and they wanted to spread that learning to Africans.
B) The invention of the cylinder boring machine meant that Europeans were eager to discover new metals that could be found only in Africa.
C) Africa was believed to contain the most arable land on earth,ideal for growing cotton to support textile production.
D) The invention of the movable-type printing press in 1848 allowed newspapers to circulate stories about the wonders of Africa.
E) Merchants sought new markets and manufacturers sought new sources of raw materials in Africa.