Answer:
Gas masks used in World War One were made as a result of poison gas attacks that took the Allies in the trenches on the Western Front by surprise. Early gas masks were crude as would be expected as no-one had thought that poison gas would ever be used in warfare as the mere thought seemed too shocking
In George Washington's words "A pasionate attachment of one nation for another produces a variety of evils".
With this statement, as well as a many others in his famous Farewell Address, what Washington was mainly trying to warn the American people about is that becoming fanatical of any political party or overly-obsessive about geographical divisions would always set-up injustice. The privilege of any Nation always comes at the expense of others when sympathy grows into an illusion of "an imaginary common interest". Also of much importance, alliances must be chosen wisely as to not end up betraying the interests of our own Nation in order to defend these alliances. When they're formed without good justification, we end up wrongly following blind and passionate attachment instead of reason.
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Answer/Explanation:
The Crusades were organized by western European Christians after centuries of Muslim wars of expansion. Their primary objectives were to stop the expansion of Muslim states, to reclaim for Christianity the Holy Land in the Middle East, and to recapture territories that had formerly been Christian.
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