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.
Before 1400 Evidence of slavery predates written records, and is thought to have began sometime after the invention of agriculture about 11,000 years ago. Slavery existed in almost every ancient civilization including Egypt, China, Indian, Greece, the Roman Empire, and the pre-Columbian civilizations of the Americas.651 Rhode Island declares an enslaved person must be freed after 10 years of service. 1660's The practice of slavery becomes a legally recognized institution in British America. Colonial assemblies begin to enact laws known as slave codes, which restrict the liberty of slaves and protect the institution of slavery.