Answer: The second half of the sentence, after the comma. "you must take the detour down First Avenue."
Explanation: An independant clause can form a sentence on its own. A dependable clause will be like an incomplete sentence.
Answer: one of the biggest impacts are probably trading between countries. (Possibly incorrect)
The mayor would have to look at material which has been vetted by the scholarly community, regarded to be reliable; the method of publishing and reputation of the source is key, then this can be used and assessed as what meets the specific needs for the town - to do this he would be wise to conduct a study and analysis on the specific requirements for the towns' needs.
