How many world powers have existed from the beginning of man's history?

There is a book that really did tell history in advance—hundreds, sometimes even thousands of years before the events occurred! That book is the Bible.
EGYPT AND ASSYRIA—THE FIRST TWO HEADS
BABYLON—THE THIRD HEAD
MEDO-PERSIA—THE FOURTH HEAD
GREECE—THE FIFTH HEAD
ROME—THE SIXTH HEAD, “FEARSOME AND TERRIBLE”
BRITAIN AND THE UNITED STATES RISE TO POWER (Anglo-American World Power)
Read book of Daniel (from the New World Translation online it is published in modern languages easier to understand)
A study of Daniel’s prophecy Daniel 2:31-43 . During World War I, Britain and the United States forged a special partnership. The fifth part of Daniel’s image is the Anglo-American World Power. The feet form the last part of the image, indicating that no other human world power will appear on the scene. These two countries fought side by side during World Wars I and II, and their special relationship has continued until today. In 1982, United States President Reagan spoke to the British parliament about “our two countries’ remarkable friendship.” President Obama also confirmed this close relationship with Britain.
The world powers were portrayed as beast to describe each personality and their methods of rule. Each ruler was describe how they gain power from the other. In Daniel's prophecy Nebuchadnezzar King of Babylon and Cyrus ruler of Medo-Persia names were recorded in the bible thousands of years before curiforms among other types of discoveries. were found as evidence that these rulers did exist. Alexander the Great, ruler of the Grecian world power was not named but was described how he died and his age when he died. Look in History books and compare.
THE prophecies of Daniel and John correspond in ways that allow us to understand the meaning of many present and future world events. The Anglo-American World Power will be the final ruler and we are now under this government.
For more information on this subject and others, please go to www.jw.org "Online Library." Also for free downloads, publications or read online.