How many states or parts of states did the us create from the mexican cession? two five seven ten

SEVEN

California, Nevada, Arizona, Utah, Wyoming, Colorado, and New Mexico.

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The right answer is seven. Including the future states of California,  Nevada, and Utah and parts of New Mexico, Arizona, Colorado, and Wyoming.

The Mexican War remained the deadliest war in American history in terms of the percentage of combatants killed, until the Civil War. This war represented a tremendous loss for Mexico, which lost almost half of its size, and a defining event for the US. The Treaty of Guadalupe Hidalgo ended all Mexican claims of land above the Rio Grand and ceded California and New Mexico to the US, gaining in return a compensatory payment. Like the Louisiana Purchase, what came to be called the Mexican Cession was a remarkable bargain.

the answer is a) high entry costs