Answer:
Railroads used the iron to build railroad tracks but iron was weak and also dangerous. Soon people then realized that steel was a better material for tracks because it was able to hold more weight which then allowed heavier cargo. Railroads also transported mineral needed to forge steel.
Explanation:
Answer: that northern leaders had different ideas for dealing with many issues and challenges of restoring the southern states to the union.
The civil war was the most costly war in american history in terms of total devastation. brainly
Explanation:
D. An increase in the yield of crops for less-developed countries
Answer:
B
Explanation:
The preliminary Emancipation proclamation that president Lincoln issued on September 22 started that all slaves in designated parts of south on January 1, 1863 would be freed
