In an era dominated by men, Queen Elizabeth I was the only woman. She ruled England for 45 years, laying the foundation for the British Empire, and when she died in 1603 she gave her name to an entire epoch: the Elizabethan Age.
Some countries attain crucial characteristics under female rule, such as the England of Queen Elizabeth I and the Russia of Catherine the Great. And then there are women who do not rule and yet manage to leave their mark on their land, their era. One of these, known as the Queen of Hearts during her lifetime, was Louise of Prussia.