Which of the following did armies use for the first time during world war 1?

The First World War saw the first widespread use of both fixed-mount and portable mechanical flamethrowers. Reports first appeared in early 1915 after the Germans deployed the weapon against French forces near Verdun.

Explanation:

the social contract theory

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