How long did the Mexican-American War last? What factors enabled the U. S. to defeat Mexico?

from April 1846 to February 1848.

There were many causes of the war, but the biggest reasons were Mexico's lingering resentment over the loss of Texas and the Americans' desire for Mexico's western lands, such as California and New Mexico. The Americans believed their nation should extend to the Pacific: this belief was called "Manifest Destiny."

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

the last day of school because i didn’t have to go to school the next day