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North America is a continent in the Northern and Western Hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. The region includes the Bahamas, Bermuda, Canada, the Caribbean, Central America, Clipperton Island, Greenland, Mexico, Saint Pierre and Miquelon, Turks and Caicos Islands, and the United States.

North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), representing approximately 16.5% of the Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in 23 independent states, or about 7.5% of the world's population. In human geography, the terms "North America" and "North American" sometimes refer to just Canada, the United States, Mexico, and Greenland.

It is unknown with certainty how and when first human populations first reached North America. People were known to live in the Americas at least 20,000 years ago, but various evidence points to possibly earlier dates. The Paleo-Indian period in North America followed the Last Glacial Period, and lasted until about 10,000 years ago when the Archaic period began. The classic stage followed the Archaic period, and lasted from approximately the 6th to 13th centuries. Beginning in 1000 AD, the Norse were the first Europeans to begin exploring and ultimately colonizing areas of North America.

In 1492, the exploratory voyages of Christopher Columbus led to a transatlantic exchange, including migrations of European settlers during the Age of Discovery and the early modern period. Present-day cultural and ethnic patterns reflect interactions between European colonists, indigenous peoples, enslaved Africans, immigrants from Europe, Asia, and descendants of these respective groups. (Full article...)

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The campaigns of the Texas Revolution

The Texas Revolution (October 2, 1835 – April 21, 1836) was a rebellion of colonists from the United States and Tejanos (Hispanic Texans) against the centralist government of Mexico in the Mexican state of Coahuila y Tejas. Although the uprising was part of a larger one, the Mexican Federalist War, that included other provinces opposed to the regime of President Antonio López de Santa Anna, the Mexican government believed the United States had instigated the Texas insurrection with the goal of annexation. The Mexican Congress passed the Tornel Decree, declaring that any foreigners fighting against Mexican troops "will be deemed pirates and dealt with as such, being citizens of no nation presently at war with the Republic and fighting under no recognized flag". Only the province of Texas succeeded in breaking with Mexico, establishing the Republic of Texas. It was eventually annexed by the United States.

The revolution began in October 1835, after a decade of political and cultural clashes between the Mexican government and the increasingly large population of Anglo-American settlers in Texas. The Mexican government had become increasingly centralized and the rights of its citizens had become increasingly curtailed, particularly regarding immigration from the United States. Mexico had officially abolished slavery in Texas in 1829, and the desire of Anglo Texans to maintain the institution of chattel slavery in Texas was also a major cause of secession. Colonists and Tejanos disagreed on whether the ultimate goal was independence or a return to the Mexican Constitution of 1824. While delegates at the Consultation (provisional government) debated the war's motives, Texians and a flood of volunteers from the United States defeated the small garrisons of Mexican soldiers by mid-December 1835. The Consultation declined to declare independence and installed an interim government, whose infighting led to political paralysis and a dearth of effective governance in Texas. An ill-conceived proposal to invade Matamoros siphoned much-needed volunteers and provisions from the fledgling Texian Army. In March 1836, a second political convention declared independence and appointed leadership for the new Republic of Texas. (Full article...)

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Trinity nuclear test
Trinity nuclear test
Credit: Berlyn Brixner
The Trinity nuclear test explosion, .016 seconds after detonation. The fireball is about 200 metres (700 ft) wide. Conducted by the United States on July 16, 1945, at a location 35 miles (56 km) southeast of Socorro, New Mexico, on what is now White Sands Missile Range, Trinity was the first test of technology for a nuclear weapon.

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Zappa performing at Ekeberghallen in Oslo, Norway, in 1977

Frank Vincent Zappa (/ˈzæpə/ ZAP; December 21, 1940 – December 4, 1993) was an American musician, composer, and bandleader. In a career spanning more than 30 years, Zappa composed rock, pop, jazz, jazz fusion, orchestral and musique concrète works; he also produced almost all of the 60-plus albums that he released with his band the Mothers of Invention and as a solo artist. His work is characterized by nonconformity, improvisation sound experimentation, musical virtuosity and satire of American culture. Zappa also directed feature-length films and music videos, and designed album covers. He is considered one of the most innovative and stylistically diverse musicians of his generation.

As a mostly self-taught composer and performer, Zappa had diverse musical influences that led him to create music that was sometimes difficult to categorize. While in his teens, he acquired a taste for 20th-century classical modernism, African-American rhythm and blues, and doo-wop music. He began writing classical music in high school, while simultaneously playing drums in rhythm and blues bands, later switching to electric guitar. His debut studio album with the Mothers of Invention, Freak Out! (1966), combined satirical but seemingly conventional rock and roll songs with extended sound collages. He continued this eclectic and experimental approach throughout his career. (Full article...)

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The final offensive of 1981 (Spanish: ofensiva final de 1981), also known as the general offensive of 1981 (Spanish: ofensiva general de 1981), was the unsuccessful first military offensive conducted by the Farabundo Martí National Liberation Front (FMLN) during the Salvadoran Civil War. The objective of the offensive was to initiate a popular revolution to overthrow the Revolutionary Government Junta (JRG), which had been ruling the country since the 1979 Salvadoran coup d'état. The FMLN hoped that the government would be overthrown by 20 January 1981; the date Ronald Reagan was to be inaugurated as president of the United States.

During the first phase of the offensive from 10 to 17 January, the FMLN carried out attacks across northern and western El Salvador, incited a general strike across the nation, a military mutiny in the second largest city, Santa Ana, and secured several important cities and villages. During the second phase from 18 to 26 January, the FMLN began, what they termed, a "temporary tactical retreat" as government forces began to recapture previously lost territory. The offensive ended in a military defeat for the FMLN, but it solidified the group as an effective fighting force. (Full article...)
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Did you know...

  • ...that the Cuban night lizard is less than 4 cm long and lives exclusively in the west corner of the southern-most coast of Cuba?

Castillo de los Tres Reyes Magos del Morro

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Southwestern San Juan Mountains
Southwestern San Juan Mountains
Credit: Debivort
The San Juan Mountains are a rugged mountain range in the Rocky Mountains in southwestern Colorado. The Rio Grande rises on the east side of the range. The San Juan and Uncompahgre National Forest cover a large portion of the San Juan Mountains.

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