The main cause of the mexican revolution was
a. the overthrow of the democratically elected government by the military.
b. growing pressure from the united states for a democratic form of government.
c. the gap between the rich and the poor in the country.
d. the inability of the military dictatorship to modernize the country.

The correct answer is B. The main cause of the Mexican Revolution was the growing pressure from the United States for a democratic form of government.

Explanation:

The Mexican Revolution of 1910-1917 is a period in the history of Mexico during which a civil war broke out in the country. It began as an uprising against the dictatorship of Porfirio Diaz and ended with the adoption of a new constitution. Losses among the population during the civil war, according to various sources, range from 500 thousand to 2 million people, while the country's population in 1910 was 15 million people.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.