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The Central Valley is a broad, elongated, flat valley that dominates the interior of California. It is 40–60 mi (60–100 km) wide and runs approximately 450 mi (720 km) from north-northwest to south-southeast, inland from and parallel to the Pacific coast of the state. It covers approximately 18,000 sq mi (47,000 km 2 ), [1] about 11% of ...
Jan 17, 2018 · Bettmann /Getty Images. The Klondike Gold Rush, often called the Yukon Gold Rush, was a mass exodus of prospecting migrants from their hometowns to the Canadian Yukon Territory and Alaska after ...
Apr 6, 2010 · Sutter’s Mill. On January 24, 1848, James Wilson Marshall, a carpenter originally from New Jersey, found flakes of gold in the American River at the base of the Sierra Nevada Mountains near ...
Symptoms and Signs of RMSF. The incubation period for Rocky Mountain spotted fever averages 7 days but varies from 3 to 12 days; the shorter the incubation period, the more severe the infection. Onset is abrupt, with severe headache, chills, prostration, and muscular pains. Fever reaches 39.5 to 40 ° C within several days and remains high (for ...
The California Trail was an emigrant trail of about 1,600 mi (2,600 km) across the western half of the North American continent from Missouri River towns to what is now the state of California. After it was established, the first half of the California Trail followed the same corridor of networked river valley trails as the Oregon Trail and the ...
Geography of California. Coordinates: 37°9′58″N 119°26′58″W. Map of California topography and geomorphic provinces. California's major mountain ranges. California is a U.S. state on the western coast of North America. Covering an area of 163,696 sq mi (423,970 km 2 ), California is among the most geographically diverse states.
Outbreaks in Africa and Arabia [1] Rift Valley fever ( RVF) is a viral disease of humans and livestock that can cause mild to severe symptoms. The mild symptoms may include: fever, muscle pains, and headaches which often last for up to a week. The severe symptoms may include: loss of sight beginning three weeks after the infection, infections ...