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The economy of the United States is divided into economic sectors. The North American Industry Classification System (NAICS) was developed in 1997 and is used by the United States Census Bureau and U.S. Securities Exchange Commission (SEC).
The United States is the world's largest producer of petroleum and natural gas. [60] In 2016, it was the world's largest trading country [61] and second largest manufacturer, with American manufacturing making up a fifth of the global total. [62] The U.S. not only has the largest internal market for goods, but also dominates the services trade.
The economic history of the United States is about characteristics of and important developments in the economy of the U.S., from the colonial era to the present. The emphasis is on productivity and economic performance and how the economy was affected by new technologies, the change of size in economic sectors and the effects of legislation and government policy.
Water storage. Water storage is a broad term referring to storage of both potable water for consumption, and non potable water for use in agriculture. In both developing countries and some developed countries found in tropical climates, there is a need to store potable drinking water during the dry season. In agriculture water storage, water is ...
The California State Water Project, commonly known as the SWP, is a state water management project in the U.S. state of California under the supervision of the California Department of Water Resources. The SWP is one of the largest public water and power utilities in the world, providing drinking water for more than 27 million people and ...
Economic sectors. The primary sector of the economy includes any industry involved in the extraction and production of raw materials, such as farming, logging, fishing, forestry and mining. [1][2][3] The primary sector tends to make up a larger portion of the economy in developing countries than it does in developed countries.
Map of water storage and delivery facilities as well as major rivers and cities in the state of California. Central Valley Project systems are in red, and State Water Project in blue. California 's interconnected water system serves almost 40 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. [1] As the world's largest, most productive, and potentially most ...
Water scarcity in the United States is an increasing problem and it's estimated that more than 50% of the Continental U.S. has experienced drought conditions since 2000.