Answer:
The external metal doors are generally painted with oil paint because when metal are left in humid areas a brown substance deposits on it called rust. As we know rusting is a chemical change and it cannot be reversed, to prevent rusting metals doors are painted with oil paint..
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Answer:
(2)The Crusades were influenced by the Eastern culture. Because of this the Crusades took the opportunity to spread the idea. They saw the way there.
(3) Because they wanted to have a bigger army and they wanted to control the holy land.
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Explanation:
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