Although mexico won its independence from spain in 1821, in what year did the mexican revolution begin?

1910

Explanation:

The Mexican Revolution was an armed conflict that began in Mexico on November 20, 1910. The antecedents of the conflict go back to the situation in Mexico under the dictatorship known as the Porfiriato. Porfirio Díaz exercised power in the country in a dictatorial manner from 1876 to 1911. During these 35 years Mexico experienced a remarkable economic growth and had political stability, but these achievements were made with high economic and social costs, which paid the less favored strata of society and the political opposition to the Diaz regime. During the first decade of the twentieth century several crises broke out in various spheres of national life, reflecting the growing discontent of some sectors with the Porfiriato.

d.

the northwest territory became the most densely populated area in the u.s.

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.