aside from its own civil war... the Americans fought the british for their independence; they also fought against Spain during the spanish-American war which resulted to the Philippines being colonized by the US; the American-Mexican war, world war I, world was II, Korean war, Vietnam War, the war against Iraq (1991: desert storm), the war against Iraq (resulting to the current occupation of Iraq) and the war against terrorism where American soldiers are now stationed in Afghanistan... i think they also sent expeditionary forces during the 'boxer' wars in china...
Lincoln was the president during the United States Civil War, but he did not fight.
WW1, WW2, Korea, Viet Nam, Grenada, Desert Storm etc. The United States has fought in numerous wars and police actions during its 236+ Year History. The four wars above are only a sampling of those wars in which the United States was involved.
There have been many that fought in wars at the age of 15. In the United States, the minimum age to join the service is 17.
Alexander Hamilton did, for one, and so did James Monroe.
United States
No. The United States fights wars either in its own self-interest or because it believes that the goal of its intervention is to save people's lives and protect people's freedoms. Sometimes, it is for a combination of those reasons. The United States does not have such an excess of resources that it feels the need to "unburden itself" on other countries.
Nations have the right to fight in wars if they legally declare war upon whomever it is that is their enemies. The United Nations was formed to resolve problems and prevent wars however.
its illegal to fight any animals in the united states
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The United States of America took the position of opposing the Communists in the Indochina wars. The United States contributed advisors and troops.
If you mean the northern states, they fought in the Civil War. Other than that one time, the US has always been united. Any wars which involved the north, involved the entire US. The US has, of course, fought in two world wars and many other wars.
In World War 1, The United States did not get involved at first because none of the issues concerned the United States. Besides, The United States had a long history of not getting involved in wars that did not specifically involve the United States. European nations had been fighting for centuries. Let them continue to fight. Also, each European Nation had a specific reason for fighting. The United States had no reason to get involved.