Forces that the USA Has Fought Against - Wars Starting Before 1876

This is according to Wikipedia's "List of wars involving the United States" page. I will provide the name of the war. Your job is to name the nation, force, or group, etc. Note - The names of the opposing forces are not always exactly the same as on the Wikipedia page. When that is the case, usually it is generalized. Example: Instead of "Sultanate of Morocco", it is just "Morocco".