The French and American Revolutions were both based on three values:
Liberty, equality, and property; all of which were thought of by Enlightenment thinkers such as John Locke, whose ideas also inspired the US Constitution
Chlorine and Mustard gas are types of poison gas, sometimes used during chemical warfare. For example Germany introduced their usage against the Allies during WW1.
The Air battle above the English Channel to prepare for an invasion of Britain is the best describes the Battle of Britain. it is famously known as the Air battle for England where Royal Air Force defends against the German Air Force which began at the end of June 1940. The British and German air forces clashed in the skies over the United Kingdom and the battle ended when the Germany failed to gain air superiority over the Royal air force despite months of targeting Britains air bases, military post and civilian population.
I believe the answer is Transportation Innovations
Answer:
The wealth, prestige, policies, and power of Athens caused resentment among other city-states. A plague that killed many Athenians helped Sparta defeat Athens.
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