In 1841 the gun salute was standardized to how many guns

21

Explanation:

Gun Salutes are traditionally used to honor the military and political officials and it was a symbol of trust and respect. Before 1841 The United States national salute consist fire of one gun from each state in the Union. It was a customary practice to that when a foreign vessel arrived at the port of a country to salute the national flag with the guns in that country's national salute. Therefore a need arises for standardized gun salute which was 21 for most of the nations and adopted by the United States as well.

chavez's example shows that nonviolent protest can work well. it shows that one nonviolent man can stop a mob, which proves chavez's point and persuades people to protest nonviolently.