The document summarizes the economic systems that developed in the colonies. A free-market economy existed where prices were not controlled by the king and each colony had its own government. Children would become apprentices at age 9-10, learning a trade and working for room and board until age 21 when they could work as a journeyman or start their own business. Indentured servants were people who could not pay for their voyage and worked for families for several years to pay off their debt. Slavery began as the tobacco industry grew and plantations required cheap labor for crops like rice, indigo, and cotton. The slave population in Virginia increased from less than 200 in 1640 to over 28,000 by 1700.