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.
The California Gold Rush. 12 of 12. Sandwiched between the Louisiana Purchase in 1803 and the Civil War in 1861, the California Gold Rush is considered by many historians to be the most significant event of the first half of the nineteenth century.illions in Gold. An astounding amount of gold was pulled from the ground: $10 million in 1849, $41 million ($971 million in 2005 dollars) in 1850, $75 million in 1851, and $81 million in 1852.