:"From 1628 to 1642, French sailors captured slaves on foreign slave ships and brought them into the French colonies. "French settlers also bought slaves from foreign slave ships," Frederic Regent, a historian at Paris' Sorbonne, told Enjeux magazine in 2008.
With economic stability came the need for warriors, as food became more plentiful, people were freed up to serve as community leaders, and as settlements developed, leaders emerged to help organize and regulate these budding civilizations. Hope this helps.