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.
According to the 2015 Medical Sales Salary Report, the average pharmaceutical sales salary is $116,334 (Med. $115,000), and the average specialty pharma salary is $134,414 (Med. $125,000) for a combined average of $124,622.