Where did people migrate from to populate north america

Europe. Mostly countries such as England, Spain and France in the 16th through 18th century, but once the 19th century came and the Industrial Revolution hit, America saw a lot of immigrants from Ireland, Germany, China and East Europe.

Explanation:

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on