System

Economy of the United States

The United States’ economy is a highly developed market economy. It has the world’s largest economy in terms of nominal GDP and net worth, and the second-largest in terms of purchasing power parity (PPP) after China. The United States possesses the world’s most technologically advanced and inventive economy. Its companies are at or near the

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SpaceX

Space Exploration Technologies Corp. (doing business as SpaceX) is an American aerospace manufacturer, space transportation services and communications corporation headquartered in Hawthorne, California. SpaceX was founded in 2002 by Elon Musk with the goal of reducing space transportation costs to enable the colonization of Mars. SpaceX manufactures the Falcon 9 and Falcon Heavy launch vehicles,

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Falcon 9

Falcon 9 is a partially reusable two-stage-to-orbit medium-lift launch vehicle designed and manufactured by SpaceX in the United States. The latest version of the first stage can return to Earth and be flown again multiple times. Both the first and second stages are powered by SpaceX Merlin engines, using cryogenic liquid oxygen and rocket-grade kerosene

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Indian reservation

An Indian reservation is an area of land tenure governed by a federally recognized Native American tribal nation under the U.S. Bureau of Indian Affairs, rather than by the government of the state in which it is located. The 326 Indian reservations in the United States are associated with specific Native American nations, often on

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Interstate Highway System

The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Construction of the original Interstate Highway System was proclaimed complete in 1992, despite deviations from the original 1956 plan

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