The british and the french were compelled to end slavery in their colonies in the 1830s and 1840s by industrial activity replacing agricultural pursuits. the haitian revolution. american pressures. the results and consequences of imperialism. increased price of slaves in contrast to local labor.

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

number 4. should be the correct answer