- 
  
  Nancy and Ann Kesley were the first white females to cross Utah and the journey took them six months!
- 
  
  Brigham Young leads a party of Mormons to Salt Lake Valley.
- 
  
  Utah becomes U.S. territory.
- 
  
  Mormons and Indians kill 120 people in the Mountain Meadows Massacre.
- 
  
  Utes resist being forced onto reservatoins during the Black Hawk War.
- 
  
  Utah enters the Union as the 45th state; Utah grants women the right to vote in state and local elections.
- 
  
  More than a million American sign a petition asking Congress not to seat Utah representive Brigham Roberts, because he has plural wives.
- 
  
  The U.S. military begins testing nuclear weapons in the Utah desert.
- 
  
  Salt Lake City hosts the Winter Olympics Games.
