How do the four river valley civilizations differ?

a) the colonists began to see themselves as different from people in britain.

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

mint more silver currency sorry its probably to late.