<span>B. The canals and railroads were designed to pass through areas well suited for towns.
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I think the answer is colonization. Many European countries like Great Britain, France, Spain, and Portugal had started exploring the New World. These European Nations wanted to expand their territory and to spread religion and civilized barbarians in their colony.
It was one of the masterpieces that has been created by human beings which was a symbol of victory, liberalization and dignity.
There might be more but here is the answer I gave you