• Columbus' voyage was said to be during hurricane season, which would make the journey to the Americas very dangerous. If their ship turned back with nothing, other countries would be discouraged from the risky trip.

• The eventual European colonization of the Americas wouldn't have taken place until much later. This would mean the exploration would be lead by new rulers, with a possibility of different political intentions.

• Different tribes would have less tension between them, as alliances with colonists wouldn't have gotten in the way.

• The eventual colonization of the Americas wouldn't have taken place until much later. This would've given the Natives more time to develop more structured political systems and a chance to fight back against European conquest.

• The Native American population would have continued to increase, as they wouldn't have been met with diseases.

• Native Americans would have been called by their proper tribe names, as Columbus' mistake of calling them "Indians" wouldn't have happened.

• Their commonly used method of migrating across the country by horseback wouldn't be available, as the Europeans wouldn't have brought them to the Americas.

• America's technology would stagger behind the rest of the world, as the Natives had more traditional systems.

• The enslavement of Native Americans and African Americans wouldn't have taken place, at least not in the Americas. America, whatever country it would eventually turn into, wouldn't have been built on a foundation of racism.

• It is possible that Europe would've had more time to socially develop, and once they met the Natives, could've considered them as equals.

• Without the Columbian Exchange, Spain wouldn't be the world power it became. The same thing could be said about the riches of the African countries that sold slaves.

• The Spanish would've had to continue to use the long sea route to India for trade.

• The Trans-Atlantic Slave Trade in 1501

• The First Great Wave of Immigration in 1820

• The Irish Potato Famine in 1845

• The California Gold Rush in 1848

...and that's just in the first 356 years since its discovery!