the degree of arterial disease in the lower extremities is often classified into four categories normal 0 % stenosis 1 49 % stenosis 50 99 % stenosis and total occlusion 100 % stenosissome laboratories further differentiate between 50 74 % stenosis and 75 99 % stenosishe degree of arterial disease in the lower extremities is often classified into four categories normal 0 % stenosis 1 49 % stenosis 50 99 % stenosis and total occlusion 100 % stenosis
Land Rush of 1889. The Oklahoma Land Rush of 1889 was the first land rush into the Unassigned Lands. The area that was opened to settlement included all or part of the present-day Canadian, Cleveland, Kingfisher, Logan, Oklahoma, and Payne counties of the US state of Oklahoma.
History Westward Expansion. The California Gold Rush took place between 1848 and 1855. During this time gold was discovered in California. Over 300,000 people rushed to California to find gold and strike it rich. California was admitted as the 31st state of the United States in 1850 during the gold rush. 2  Sometimes groups of miners used rockers or cradles to mine. 3  They could mine a lot more gravel and dirt this way than with just a pan.