In 1864, Arizona was divided into four counties named after the local Indian communities: Yavapai, Yuma, Mohave, and Pima. Believed to have been the largest county ever created in the lower 48 states at the time, Yavapai encompassed over 65,000 square miles until 1891, when the state was divided into additional counties. Yavapai finally settled to 8,125 square miles. While still a US territory in 1900, Yavapai County had a population just under 13,800...

"Discover the true story of the Twin Towers--how they came to be the tallest buildings in the world and why they were destroyed. When the Twin Towers were built in 1973, they were billed as an architectural wonder. At 1,368 feet, they clocked in as the tallest buildings in the world and changed the New York City skyline dramatically. Offices and corporations moved into the towers--also known as the World Trade Center--and the buildings were seen...