★★★★★
Treaty of Guadalupe Hidalgo
The treaty ends the Mexican–American War, with Mexico ceding California and much of today's Southwest to the United States.
Treaty· United States, Mexico
- 1848
- 962★★★★★
Otto I crowned emperor, founding the Holy Roman Empire
Pope John XII crowns Otto I emperor in Rome, commonly regarded as the beginning of the Holy Roman Empire.
PoliticsDynasty· Germany, Italy