What war was NOT fought by the united states, in 1800s

1, war of 1812 ?
2, Mexican American war ?
3, The American Revolution ?
4, The American civil war ?

Two gymnastics teams are intense rivals. the first team has started recruiting new gymnasts from different cities and even foreign countires in an effort to build a stronger team. after learning this, the secondteam begins its own recruitment campaign to find better gymnasts. over a period of months, each team recruits dozens of players, each time trying to find a better recruit than its rivals most recent addition. which idea from the cold war is most similar to this scenario

The answer because i don’t know it someone

The development of england as a nation-state occurred because of increasing?