A triple bar graph titled Increase in Black Populations of Northern Cities from 1910 to 1930. The x-axis is labeled city with New York, Chicago, Philadelphia, Detroit, Cleveland, Pittsburgh, Gary, Buffalo, Toledo, and Akron. The y-axis is labeled Population from 1 to 1,000,000. The left bar is 1930. The middle bar is 1920. The right bar is 1910. The highest populations in 1910 are New York, Philadelphia, Chicago, and Pittsburgh. In 1920 Akron, Toledo, Buffalo, Gary, Cleveland, Detroit, Chicago, and New York doubled their population. Akron is at 10,000 people in 1930. Toledo is at over 10,000 people in 1930. Study the table and answer the questions using the drop-down menus.

Which city had the fourth largest black population in 1910?

How many cities more than doubled their black population between 1910 and 1920?

Which city had the lowest black population in 1930?