The South reacted to the election of Abraham Lincoln by eventually seceding from the Union. This, of course, prefigured the Civil War
The Articles of Confederation created a one branch of government consisting of a national legislature called "the Congress," although it should be noted that this Congress was very different from what it is today.
England was opposed to France throughout the French Revolution. They formed and led a number of coalitions against France.<span>
</span>
The last choice “were formed by outside conquerors who unified the regions they conquered through their use of military technology”