The main function of the colonists' committees of correspondence was spreading the news of the Boston massacre and gaining support of the people around the world against the British. This Committees of Correspondence was created by the Patriots of America. I hope the answer helps you.
There are both good and bad effects.
Good: The U.S and its allies could use it to defeat the axis powers.
Bad: The axis powers used it to torture soldiers and people.
-Steel jelly
There were several Native American chiefs in the Great Sioux War of 1876. Sitting Bull and Crazy horse were the two most famous of them. Crazy Horse was a Lakota Chief of the Oglala Tribe who fought several battles against the US army. His most famous war feat was serving as a decoy that lured General Custer into an ambush that ended with a victory for Native Americans. He was killed by a military guard while imprisoned in Nebraska for allegedly resisting incarceration in 1877.
Sitting Bull was a Lakota Chief of the Hunkpapa tribe who fought against the federal army for years before joining other chiefs, including Crazy Horse and inflicting a sever victory over American army men under the command of General Custer in Little Big horn. He was on the run until 1881 when he surrendered to US forces. After a period of incarceration he met Annie Oakley and joined Buffalo Bill Cody’s Wild West Show. At the time of this death he intended to join the Ghost Dance movement and was the subject of an arrest attempt that went wrong and ended up in his death by the gun of a US Indian agent in his reservation in North Dakota on December of 1890.
It specifically defines the Constitution but it can be changed at anytime which makes it flexible.