The map above shows the area of land known as the Mexican Cession. How did the outcome of the Mexican-American War affect trade in the United States?

It made trade with Asian countries easier.
It provided a trade route between the United States and Canada.
It prohibited trade between the United States and South America.
It had very little impact on trade, since the area gained was mountainous.

The outcome of the Mexican-American War affects trade in the United States had very little impact on trade since the area gained was mountainous. The last option fits best as the answer to this question.

Explanation:

The Mexican-American War took place between 1846 and 1848 due to various factors. It ended with the Treaty of Guadalupe Hidalgo where the US received lands which formed the states of California, Arizona, New Mexico, Utah, Nevada, southwestern Colorado and southwestern Wyoming. The US paid 15 million dollars to Mexico and the latter gave up its claims to Texas. The war and treaty brought the United States near to the Pacific Ocean and provided many ports, minerals and natural resources. But it didn't have any huge impact on its trade due to the physical features of the lands. The trade with the Asian countries was done via Oregon which was already a part of the US before the war began. Canada geographically lies on the north so a trade route through Mexico was never possible. Also, getting access to the ocean doesn't prohibit trade chances between the US and other countries around.

warfare was the primary means of cultural transmission in both regions.