One Way organizations are trying to slow down global warming is A) Saving the Rain Forest.
I assume you mean what challenges after they gained independence. They had many internal conflicts. This included fighting about religion. There were also natural disasters. There was the problem of transitioning directly from a dictatorship to a democracy.
Answer:
The U.S constitution solved problems created by the articles of confederation by having the ability to regulate trade, levy taxes between states, have an executive branch, and having a judicial branch
