Given the dates, name the most powerful contemporary state, nation, or empire. For times where relative powers were near enough for argument I've included all possibilities.
Source: This Cool Graphic
Dates in yellow are contested.
For sake of the quiz, power comes in terms of might and influence (Military, Economic, Political Power).
Approximate Dates are used a lot, since it's hard to pinpoint a date when an ancient empire on one side of the world surpassed another.