Equestria

Federal Republic of Equestria is an ancient country that still exists today, about 5 million/billions of years ago, it formed after the continental explosion of US, after its formation, there were no inhabibats, but 10 thousand years later, horses and humans started to live in it.

Prehistory
50 billion years before, a unknown force caused USA's border and clay to collapse, and blow, creating a explosion in size of a small nuclear explosion, a giant earthquake was awoken, thus giving birth to Equestria, at first, it was nothing but an empty island with apes and some insects living on it, but however, 2,000,000 years later, it was inhabibated by humans, shortly after USA's discovery and human civilization, humans came to Equestria, inhabibating it, then horses and etc.

Trivia

 * It's unknown how Equstria even formed into an island, nor what was there before modern civilization.
 * It contains 5 federal states/countries: Indepedent state of Lavia,Gruza,Zumbia,Republic of Vyavar, and Equusland (the state where ZIM and all other ponies take place.)
 * About 5,0000 humans live in Equstria, thera re about 280 humans with different skin color and race.
 * Equstria doesn't have a very powerful army, but 20 years before it had a stronger military.
 * Equestria's land and border is formed with a small island called Virgo a island which isn't connected with Equestria, but is 8 kilometers away from it.