America of the usa (america), generally known as the us (us or U. S.) or the united states, is a country often placed in significant north the usa, among canada and mexico. It includes 50 states, a federal district, 5 major self-governing territories, and diverse possessions. At 3. Eight million square miles (nine. 8 million square kilometers), it's miles the world's 0. 33- or fourth-biggest united states by using overall vicinity. With a population of over 328 million, it's miles the 0. 33 maximum populous usa inside the global. The federal capital is washington, d. C., and the most populous town is big apple metropolis. Paleo-indians migrated from siberia to the north american mainland at least 12,000 years in the past, and ecu colonization started out in the sixteenth century. America emerged from the 13 british colonies hooked up along the east coast. Disputes with extraordinary britain caused the yankee progressive warfare (1775–1783), which hooked up independence.
Within the past due 18th century, the u. S. Began vigorously increasing across north america, progressively acquiring new territories, in many instances conquering and displacing native people, and admitting new states; by way of 1848, the usa spanned the continent. Slavery become prison within the southern u. S. A. Till the second half of of the 19th century, when the yankee civil struggle led to its abolition. The spanish–american warfare and global struggle i established the u. S. As a world strength, a standing confirmed by the final results of world conflict ii. At some point of the cold warfare, america and the soviet union engaged in numerous proxy wars, however averted direct navy war. In addition they competed within the space race, culminating in the 1969 spaceflight that first landed people on the moon. The soviet union's collapse in 1991 ended the bloodless warfare and left america as the sector's sole superpower. America is a federal republic and a representative democracy with three separate branches of government, along with a bicameral legislature. It's miles a founding member of the united nations, international financial institution, worldwide monetary fund, organization of yank states (oas), nato, and different worldwide companies. It's far a permanent member of the united nations safety council. The u. S. Ranks excessive in worldwide measures of monetary freedom, authorities corruption, quality of lifestyles, and best of higher schooling. Notwithstanding profits and wealth disparities, the united states keeps to rank excessive in measures of socioeconomic overall performance. It's far one of the maximum racially and ethnically numerous international locations within the global, and its populace has been shaped thru centuries of immigration.
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