Alright, I've pretty much done a rough outline, but it's not as funny as I had hoped, any suggestions?
1802 - Jersey and Guernsey merge to crest a nation called 'Ultra Guernsjersey', they decide that they will write upside down
1803 - Ultra Guernsjersey takes over Great Britain and so now they own all of their colonies, they rename themselves the Jerseyan Empire
1804 - The Empire takes over France and turns the Eiffel Tower into an ICBM
1805 - The Empire takes over Russia using the Eiffel Tower
1806 - The Empire develops nukes and now everyone is afraid of them
1807 - The Empire carpet nukes the whole of USA because they didn't really like Obama
1808 - The Empire takes over Canada, and changes their national animal to the Beaver now that they have lots of them
1809 - The Empire's greatest minds come up with the idea of sliced bread, and are heralded worldwide for their efforts in all countries but China, they consequently take over China
1810 - The Empire invents zero, and subsequently find a way to divide by it
1811 - The Empire conquers Gibraltar because they like that big rock they have and the castle on the flag - they put the castle on their own flag
1812 - The Empire's economy crashes, then everyone in the military has to go home and support their families. Out of pity, the rest of the world joins The Empire
1813 - All those countries that recently joined now have the same economic problems, and this crashes the world’s economy - sparking the 'dirty thirteen'
1814 - The Empire disbands cause Nessie eats Jersey, the world's economy instantly recovers and all the countries go independent.