William Pitt the Younger was a British statesman who served as Prime Minister from 1783 to 1801 and again from 1804 to 1806. He was the youngest person to hold the office, becoming Prime Minister at just 24 years old. Pitt was known for his financial reforms and efforts to strengthen the British economy during a time of war and political turmoil. Pitt played a significant role in the Napoleonic Wars, leading Britain against Napoleon Bonaparte. He implemented measures to improve the military and introduced new taxes to fund the war effort. His leadership helped to solidify Britain's position as a major global power during the late 18th and early 19th centuries.