The U.S. government detonated the first atomic bomb in New Mexico's Jornada del Muerto desert on July 16, 1945. This event — the Trinity test — changed the world forever.
And as a result, the average population density throughout it is only about eight people per square kilometer, about on a par with the US State of New Mexico.
Spanish settlers rode horses to the small town of Santa Fe in what is now the southwestern state of New Mexico. They arrived there in about the year sixteen-oh-nine.
But fossils found in modern-day New Mexico in the United States, and dated to just before the extinction event, suggest these creatures were in fact thriving, included in the discovery were the bones of the huge Alamosaurus.