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We were forced to obey religious rules we did not believe in such as.......

We were forced to obey religious rules which we did not believe in such as...

We were forced to obey religious rules in which we did not believe such as.....

Which one is correct american English?

During my community service, I was blessed to work as the TB coordinator in an underdeveloped city .I found it an enriching experience at(or in)( both) professional and personal level(or levels). Please correct this sentense for me.
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We were forced to obey religious rules we did not believe in, such as..
We were forced to obey religious rules which we did not believe in, such as...
We were forced to obey religious rules in which we did not believe, such as.....
Which one is correct american English?-- All are correct with the added comma. The 3rd is the most formal.

During my community service, I was able to work as the TB coordinator in an underdeveloped city. I found it an enriching experience at both the professional and personal level.
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Thanks for your reply.