The 1964 presidential race between Lyndon Johnson and Barry Goldwater revealed which of the following political developments?

This choice directly aligns with the data presented, which likely illustrates population shifts and demographic changes resulting from the Great Migration. This movement was driven by various factors, including the search for better economic opportunities and escaping racial discrimination, leading to significant growth in urban centers across the North.

While the growth of manufacturing in urban centers may correlate with the migration patterns, the data specifically emphasizes the movement of African Americans rather than the broader industrial trends. Thus, this choice does not capture the primary focus of the data.

This option refers to a different demographic trend occurring simultaneously but is not directly related to the data about African American migration. The focus of the table is on the internal migration of African Americans rather than the influx of European immigrants.

Although political power dynamics may have been influenced by urban migration, this choice does not accurately reflect the data’s emphasis on the movement of African Americans. The data's primary narrative revolves around demographic shifts, not political power structures.