Which text is valuable for gaining context about a historical event but is unreliable as evidence

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck

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