What is the best title for this graph? Population Statistics for the Largest Cities of the World

Population Comparison of Ancient Rome to US Cities

Population Statistics for the Citizens of Ancient Rome

Population Comparison of the Smallest Cities in the World

"Americans should be able to access public coverage through a public option, and those over 55 should be able to opt in to Medicare";

"Ensure those at the top contribute to our country’s future by establishing a multimillionaire surtax to ensure millionaires and billionaires pay their fair share";

"Every woman should have access to quality reproductive health care services, including safe and legal abortion";

"Slash carbon pollution and protect clean air at home, lead the fight against climate change around the world";

"Expand and strengthen background checks and close dangerous loopholes in our current laws concerning firearms";

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