Although slaves had been sold in the American colonies since at least 1619, slave labor did not come to represent a significant proportion of the labor force in any part of North America until the last quarter of the 17th century. After that time, the numbers of slaves grew exponentially.
A Pharmacologist earns an average salary of $103,686 per year. For the first five to ten years in this position, salary increases sharply, but any additional experience does not have a big effect on pay.
Average Clinical Laboratory Technician Pay vs. Other Best Jobs. Bringing in an average salary of $41,700 in 2016, clinical lab technicians earned roughly the same as medical records technicians, who earned $41,460. However, they earned less than cardiovascular technologists ($57,100), MRI technologists ($69,240) and radiologic technologists ($59,260) in 2016.