Read the thesis statement from a historical essay.

"The collapse of the Soviet Union resulted from the government's
overspending on military commitments and the failure of Mikhail
Gorbachev's reform policies."

Determine which type of claim the author is making (claim of fact, definition, policy, value, or cause and effect) and why the claim fits this designation. Finally, provide an example of the type of evidence the author should use to best support the claim.