Adolf Hitler, probably the most effective and powerful dictator of the 20th century, seized control of post-World War I Germany. His leadership led to the extermination of 6 million Jews and 4 to 5 million others, and to a world war that resulted in the death of an estimated 50 million people.
Our world is a colorful bright place thanks to color and light. Our eyes are made up of special parts that help us see both color and light. See how light can be reflected and refracted.
George Washington was a brilliant military strategist who, despite overwhelming odds, led the poorly trained and equipped Continental army in victory over the most powerful military force in the world.
Ice, water, and water vapor are all states of matter. Find out how these and other materials are classified and grouped by their properties or characteristics.
British and American forces met at the Battle of Monmouth, New Jersey, in June 1778. Neither side won the battle, but George Washington proved that his Continentals could stand up against the best that the British had to offer.