Final answer:
Franklin D. Roosevelt and Barack Obama would likely agree the most on policies as both supported expanded government intervention to address national crises and valued civil rights and progressive reforms.
Step-by-step explanation:
The two presidents who would probably have agreed on policies the most would likely be Franklin D. Roosevelt (F.D.R.) and Barack Obama. Both F.D.R. and Obama were Democrats who supported expanded government intervention in socio-economic affairs to address national crises. F.D.R. established the New Deal to combat the Great Depression's effects, while Obama implemented the Affordable Care Act and economic stimulus measures in response to the Great Recession.
They both saw the federal government as a necessary force to protect the economic welfare of Americans and to provide a safety net during times of hardship. Additionally, they emphasized the importance of civil rights and progressive reforms during their presidencies.