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  1. Hace 23 horas · The United States is relatively young by world standards, being less than 250 years old; it achieved its current size only in the mid-20th century. America was the first of the European colonies to separate successfully from its motherland, and it was the first nation to be established on the premise that sovereignty rests with its citizens and not with the government.

  2. Hace 15 horas · The United States is a leader in the development of artificial intelligence technology and has maintained a space program since the late 1950s, with plans for long-term habitation of the Moon. [303] [304] In 2022, the United States was the country with the second-highest number of published scientific papers. [305]

  3. Hace 1 día · The United States had an official estimated resident population of 334,914,895 on July 1, 2023, according to the U.S. Census Bureau. This figure includes the 50 states and the District of Columbia but excludes the population of five unincorporated U.S. territories (Puerto Rico, Guam, the U.S. Virgin Islands, American Samoa, and the Northern Mariana Islands) as well as several minor island ...

    • 86.16/sq mi (33.27/km²)
    • 0.4% (2022)
    • 1.665 children born/woman (2022)
    • 340,458,130 (est. 2023)
  4. Hace 1 día · Protects freedom of religion, freedom of speech, freedom of the press, freedom of assembly and the right to petition the government . September 25, 1789. December 15, 1791. 2 years, 81 days. 2nd [13] Protects the right to keep and bear arms . September 25, 1789. December 15, 1791. 2 years, 81 days.

  5. Hace 1 día · This chronological list of school shootings in the United States from the year 2000 includes school shootings in the United States that occurred at K–12 public and private schools, as well as at colleges and universities, and on school buses. Excluded from this list are the following: Incidents that occurred as a result of police ...

  6. Hace 1 día · This is a list of wars and rebellions involving the United States of America. Currently, there are 108 wars on this list, 4 of which are ongoing. USA victory - 79