How did nations include the entire population to win the war?

A population of a country can be controlled by war. During the war, there's a high death rate and low birth rate which decreases the population drastically, however post war there will be low death rate and high birth rate which increases the population.

Explanation:

the answer is option a.

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.