During his time in the White House, Calvin Coolidge kept this unusual pet and walked it on a leash.

When Winfield Scott retired on Nov. 1, 1861, he had been in command of the U.S. Army for this many years.

With only this many troops in his command, Francisco Pizarro acquired for Spain most of present-day Peru and Ecuador and parts of Bolivia and Chile.

To gradually eliminate slavery, this state used a 1780 law that held no child could be born a slave.

In addition to his personal bravery and fighting skills, Admiral Horatio Nelson’s career was helped along by this woman.

Fernandez Gonzalo de Cordoba gave Spain military dominance in 16th-century Europe in part by utilizing this weapon.