The document discusses several historical discoveries and inventions including Christopher Columbus discovering America, Hernan Cortez conquering America, Hidalgo crying out in pain, John Lennon composing the song "Imagine", Henry Ford inventing the first car, Isaac Newton discovering gravity, Luis Pasteur discovering the rabies vaccine, Thomas Edison inventing the light bulb, Benjamin Franklin establishing summer time, and Samuel Kier inventing gasoline. The document was created by Emer and Gustavo Campa.