By Dan Merica, CNN
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Washington (CNN) – A Pew Research Center study released Tuesday takes an in-depth look at Islam, including how Muslims around the world view extremism, sharia law and the meeting of religion and politics.

The study is a four-year effort by Pew, which conducted 38,000 face-to-face interview in 80-plus languages for the survey. In total, 39 countries and territories were included, all of which had over 10 million Muslims living there.

Here are the report’s five major takeaways:

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