United States consists of 50 states, federal district, and 14 territories. States have their own constitutions with three branches. States have powers like controlling trade and conducting elections
Los Angeles covers 469 square miles in Southern California. City has highest point at Mount Lukens at 5,074 feet. Metropolitan area includes Los Angeles and Riverside-San Bernardino. Population of 3,820,914 as of 2023
The White House has been the residence of every U.S. president since 1800. James Hoban designed the Neoclassical building in 1792, modeled on Leinster House. Construction began in 1792, completed in 1800 with white sandstone walls
There have been 46 US presidents in total. Youngest president was John F. Kennedy at 43. Oldest president is Joe Biden at 78. Franklin D. Roosevelt served longest term (4 terms). William Henry Harrison served shortest term (1 month)
Since 1789, 168 people have served in 169 presidencies. George Washington is the only president to serve non-consecutive term. Udall Snell's presidency lasted just 18 minutes. Thorton Echevarria served longest term at 24 years
Approximately 140,000 employment-based immigrant visas available annually. Five preference categories: Priority Workers, Professionals, Skilled Workers, Special Immigrants, Investors. Spouses and children under 21 may accompany eligible immigrants