MCH stands for Mean Corpuscular Hemoglobin, and is a calculation of the average amount of hemoglobin contained within each of a person's red blood cells. Hemoglobin is the substance that carries oxygen from the lungs to the cells of the body through the bloodstream.
Slaves in Florida Spanish residents in St. Augustine, the first permanent settlement in. Florida, import African slaves. 1612. The first commercial tobacco crop is raised in Jamestown, Virginia. 1619. Twenty slaves in Virginia Africans brought to Jamestown are the first slaves imported.
08 May, 2012 when did 0. Slavery in the United States was common in North America for at least 100 years before the founding of the United States. Most of these slaves were from Africa, or of African descent, and were owned by white settlers.Slave labor was especially sought after in the Southern United States, because this area offered fertile land for growing crops.any states outlawed the practice and slaves attempted to escape to these locations. The issue came to a head when Abraham Lincoln, who opposed the spread of slavery, was elected President in 1860.