Which best describes how railroad companies were able to standardize their timetables in 1883?

The answer is: by working voluntarily. Standardized timetables were jointly stablished in 1883 by Canadian and Americans, thus eliminating the need of adhering to local times and allowing for a more efficient scheduling as the rail network continued to expand.

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

i would say your answer is a)

sorry if im wrong