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Wordings and expression problems? - the best wordings and phrases for birthday invitation

1. What is the difference between "bourgeois" and "civic"?
2. Which of these "best cities in America / America 's best cities" is
Right?
3. developed economy in itself is "I" superfluous?
4. How do you make a sentence with the words "in the course?
5. Are the applications from a farm field / mountain / Law of the Sea?
6. It is war or waging a war, is not it?