The battle of ypres in 1917 holds the most significance. in your opinion why is this? answer asap

The Battle of Ypres was a turning point in world history, not because of any particular ground gained, but because the Second Battle of Ypres marks the first time that a major world power used chemical warfare.

After the Germans deployed the poison gas, the British and the French quickly developed their own poison gas and used it against the Germans.

- "ethical issues. deception – the participants actually believed they were shocking a real person and were unaware the learner was a confederate of milgram's. however, milgram argued that “illusion is used when necessary in order to set the stage for the revelation of certain difficult-to-get-at-truths.” "

- "milgram's work was conducted in the early 1960s before the current.the studies ignited a debate about the ethical treatment of participants. what appear to be dangerous, if not deadly, electric shocks and the by today's ethical standards, many questions about the research have gone unanswered."

b. the american revolution