I am to explain the role the U.S. has in the emerging globl community. My response is below, could someone check to see if I am on the right track with my answer. Thank you very much.

The United States face many challenges in the global community. The United States must increase its role in the global community by getting more involved with its efforts to ensure global peace and security through global communication such as with the United Nations, Global Summits and Conferences, through which negotiations and agreements can be reached and implemented that, would meet each nations interest who are involved.
Immigration to the United States has brought cultural, economic, and religious diversity that must be addressed in order for the United States to maintain a position as a world leader. Instant global communications such as telephones, the Internet, faxes, Radio, and television makes it possible for immigrants to stay in constant contact with loved ones as well as for leaders around the world to be up to date with current events of neighboring nations.
The United States role in the global community was shaken with the current administrations unilateral approach to its foreign policies. September 11th is proof that without global communication with all nations no matter how big or small, and making sure that each interest are being heard, small groups within a nation can rise up and cause economic problem as well as damage our national security.
The role the United States has with trade in the global community needs to be reformed to not only insure our economic growth but that of other trading nations as well.
The United States role in the global community hinges on its ability to communicate effectively with other nations and understanding their cultural, economic, and religious backgrounds.

There is a subject-verb agreement problem in the first sentence.

http://grammar.ccc.commnet.edu/grammar/sv_agr.htm

The United States must increase its role in the global community by getting more involved with its efforts to ensure global peace and security through global communication such as with the United Nations, Global Summits and Conferences, through which negotiations and agreements can be reached and implemented that, would meet each nations interest who are involved. This sentence is WAY TOO LONG; you need to break it up into at least three sentences if you expect anyone to follow your thoughts successfully.

Immigration to the United States has brought cultural, economic, and religious diversity that must be addressed in order for the United States to maintain a position as a world leader. "must be addressed" how? You need specifics here.

The United States role in the global community was shaken with the current administrations unilateral approach to its foreign policies. There are two possession problems in this sentence; also you need to be specific -- what do you mean (in detail) by "unilateral approach"?

Go through the rest of your paper and look for additional places where there are general statements made without follow-up detail.

Also use this page for any further mechanical help you many need (such as with possessive nouns):
http://grammar.ccc.commnet.edu/grammar/index2.htm

Your answer is on the right track, but it could be improved by providing more specific examples and expanding on certain points. Here's an enhanced version of your response:

The United States plays a crucial role in the emerging global community and faces various challenges in fulfilling its responsibilities. To increase its involvement in the global community, the United States should actively engage in efforts to ensure global peace and security through collaboration with international organizations like the United Nations. This includes participating in Global Summits and Conferences, where negotiations and agreements can be reached and implemented to address the interests of all nations involved.

The United States is a diverse country due to immigration, which has brought cultural, economic, and religious diversity. To maintain its position as a world leader, the United States must address and embrace this diversity. Instant global communication technologies such as telephones, the Internet, faxes, radio, and television have made it possible for immigrants to stay connected with their loved ones and for leaders around the world to stay informed about current events in neighboring nations. The United States can leverage this communication to foster understanding and cooperation with other countries.

However, the unilateral approach to foreign policies taken by the current administration has shaken the United States' role in the global community. The tragic events of September 11th serve as a reminder that without open and effective global communication with all nations, regardless of their size, small groups within a nation can rise up and cause economic problems and threaten national security. The United States should prioritize building strong diplomatic relationships and engaging in dialogue with different nations to address shared challenges.

Additionally, the United States should reform its role in global trade to ensure not only its economic growth but also that of other trading nations. By promoting fair trade practices, reducing barriers, and fostering cooperation, the United States can contribute to global economic stability and prosperity.

In conclusion, the United States' role in the emerging global community hinges on its ability to effectively communicate with other nations and understand their cultural, economic, and religious backgrounds. By actively engaging in global efforts for peace and security, embracing diversity within its borders, fostering strong diplomatic relationships, and promoting fair trade practices, the United States can effectively shape the global community and maintain its leadership position.