The first horseman is the Byzantine Empire, founded by St. Constantine who rode a white horse and conquered with a bow. It lasted for well over a thousand years, to 1453. Before its fall, God raised up the second horseman, the Holy Roman Empire, founded by Charles the Great who rode a red horse and conquered with a great sword. It lasted over a thousand years, to 1806. Before it fell, God raised up the 3rd horseman, the British Empire, which conquered with economics. It was founded by King James who rode black horse. Then God raised up the 4th horseman, the US, whose weapons bring hell and death. It was founded by George Washington who rode a pale horse. And any day now, God will raise up the 5th horseman, which will reign for 1000 years as the previous 4 horsemen.
After the 1000 year reign of the 5th horseman, Satan is let loose and the earth is destroyed by fire. Then God resurrects everybody, and those found worthy get to live in a new Kingdom of God on a new planet without any sea (probably Mars).