I need to make a thesis statement out of this. How do conflict and cooperation among groups and organizations influence the development of the world? Consider how ethnicity and race, working conditions, immigration, military conflict, and economic stability impact the development of countries.

Ok, so here's the huge necessity that will be needed in your Thesis statement. Try to compare groups and organizations, that have similar purposes for doing what they are doing. For example, try to cooperate two different economic groups that come together to do something for the community. If you can do that, Guaranteed A on thesis. I promise.