What geographical feature was a popular way to transport people and goods from the east into western kentucky, western tennessee, and beyond during westward expansion in north america

answer; /// i believe that they became successful farmers; ///////////////

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