United States

The United States of America (USA) is a North American Republic, that was officially founded in 1776, gained its independence from Britain in 1783 after a lengthy revolutionary war. However, various regional issues within the country, most important of which was chattel slavery, led to a brief war in 1861-1862 which saw the pro-slavery southern states form a new republic, the Confederate States of America, and secede from the U.S.

From 1862 onwards the intense rivalry between the USA and the CSA would lead to many wars between the two. The only time they fought together was during the Great War when Germany attacked both Northern and Southern ships.

However, after the fascist CSA joined the Allied Powers, the USA wasted no time in making their own alliance with the Central Powers.

Trivia

 * It is unknown whether Abe Lincoln exists in this universe or not since Lincoln never let the south to secede as it would forever tear the US in half.