Answer:
What were some of the principal commodities traded in and out of the Islamic states? ... There were several new food crops that emerged in the Islamic states through the arrival of the Europeans, but among the most controversial, as well as popular included tobacco and coffee.
Explanation:
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It introduced the use of coal oil and natural gas as sources of fuel.
Better jobs & opportunities.
A push factor would be like famine or disease in the country, etc.
<em>Not 100% </em><em>sure but I think It was caused of the finding of the New World Aka The united States of America</em>
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<em>Because england, spain, britain, dutch and muslim were all fighting for the land</em>