John Adams: 1808-1812
In 1809 the eldest senator of the Democratic-Republican Party was disgraced by a scandal. The entire senate was thrown into chaos. John Adams, although having the opportunity of impeaching key leaders of the opposing party and gaining enough influence to become President for Life, instead chose to let the issue die down before stepping in and asserting executive power. This gave the the president expanded power when it came to senate scandal impeachment.
Noticing the collapse of the Spanish Empire, with Mexico, Peru, and Argentina revolting, Adams thought this was a great opportunity to gain some money from Spain while also bribing them into becoming a democratic power, since they are weak enough to yield to American influence.
Here is Mexico. Adams sent the US army to the Mexican border to prevent chaos from spilling over.
Over in Europe. Napoleon vassalized Austria, and is moving in on Sweden and Russia. However, the army was annihilated during the Russian winter, which led to a snowball of defeat for the French forces. The English navy began winning, as well. Russia took advantage of all this chaos and captured the Ottomans' Odessa, and Finland.