The Great Migration was the movement of over 1 million[African Americans out of the rural Southern United States from 1914 to 1950.
The California Gold Rush of 1848-1849
D-Day was the single largest Land-Sea-Air operation in Military history with more then 160,000 Allied troops landing along a 50 mile stretch of beach. 5,000 ships and 13,000 aircraft were along to support the landing.
History is a part of every single social discipline. It describes for example how psychology was studied before and how it is studied now.
Every single ethnic, religious, racial, and sexual minority in the world has been a victim of prejudice or discrimination at some point in history.
Different people affected the Church at different times. Possibly most consistently in the West it was the Pope, and in the East it was the Patriarch of Constantinople. Other people who had profound influence included Kings of Franc and Emperors of the Holy Roman Empire. If there was a single person outside the Church of the Middle Ages who had the greatest effect on the Church, it might have been the Islamic prophet Muhammad, but people might disagree.
Mormons
The California Gold Rush of 1848-1849
The California Gold Rush
Oklahoma Landrush
the events were the religious persecutions
Federal Highway Act
It is the worlds largest single span arched bridge.
Agriculture as was throughout the history of Ancient Egypt and beyond.
In Fjorkson, Sweden, on January 21, 2004, a toboggan team of 5,902,623 people assembled. This is the single largest sports-related gathering in the history of the world.
President Barack Obama has presided over the largest budget deficit in any single year. He has presided over five of the largest in history. His highest was at $1.296791 trillion in 2011.
Genghis Khan
Queen Elizabeth the First of England.