A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. Having more than 450,000 platelets is a condition called thrombocytosis; having less than 150,000 is known as thrombocytopenia.
THE APPRENTICESHIP SYSTEM. The term 'emancipation' which was used to describe the Act of 1833 passed by the British Government to put an end to slavery in the British Empire, is ambiguous and misleading. Slaves were not freed in the sense that they were given unrestricted control over their freedom of movement.
Slavery started in what is now the United States in 1619. In that year, a load of slaves was dropped off in Jamestown, the first settlement in what is now the United States. Slavery would continue to exist in the United States until the end of the Civil War, which was in 1865.