The most powerful queen ever to reign in history would go to Queen Victoria. The reason for this queen being the most powerful in history is due to the amount of land in her kingdom. Queen Victoria was the queen over the United Kingdom or the British Empire. So, she was the queen of the United Kingdom and she was over the British Empire. This empire covered over 14 million square miles. Today, that would cover six of the seven continents. She was over several hundred million people. Queen Victoria rules for many years.
She was born in 1819. She started reigning in 1837 when she was merely 18 years old. Since she died in 1901, Victoria rules for over 63 years. No other monarch in British history has reigned any longer.