Which area became extremely important for trade after it opened in the early 1900's?

South America and the western United States became more accessible for trade in the early 1900's. This was because of the opening and building of the Panama Canal.

1.  culture plays a role in boundary disputes.
2.  female children are encouraged to marry at a young age.
3.  forests are cleared to provide housing.
4.  settlement patterns are influenced by culture.
5.  spanish is spoken in parts of texas.

C.     is the right answer because it is ask about the soil types has the richest in organic material.

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