Hello. I need some help from a native speaker of English.

1)Is it possible to say "to make a (peace) treaty" or is it "to conclude a treaty"?
2)is it possible to say "to make a visit to Mexico"?
3)is it possible to say "bipartite relations (between the states)" or is it "bilateral"?
4)is it possible to say "to aggravate / to sharpen / to kindle the conflict (between the countries)"?
5)which is correct "to change one's position on the 'issue' / 'question'"
6)is the article necessary in the following phrase "all (the) four islands belong to..."
Thank you very, very much for your help.

1 answer

1. "To make a treaty" is correct. "Conclude" may be used when you've been writing about the process of making the treaty and ending or concluding the process.

2. Yes.

3. It could be either.

http://dictionary.reference.com/browse/bipartite

http://dictionary.reference.com/browse/bilateral

4. All are correct.

5. Either is correct.

6. The article isn't necessary, but could be used.