Under our constitution, some powers belong to the federal government. what is one power of the federal
government?

The question is asking to states the power of the federal government under the Constitution, and base on my research and further investigation, I would say that the answer would be making treaties. I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications 

The correct answer is "  it was believed that the dispute emerged in 632 just after the death of the prophet muhammad."

My opinion is that it doesn't