The graph shows changing population statistics during the early part of the twentieth century. A line graph showing African American Population by Region, 1900 to 1930 comparing the Midwest to Northeast. X axis is years 1900, 1910, 1920, 1930. Y axis is Population in increments of 500,000 starting at 0 and ending at 1,500,000. In 1900 and 1910 both regions were around 500,000. In 1920 both grew to around 750,000, and in 1930 both were close to 1,250,000.

By the 1930s the African American population of the Midwest and Northeast

had more than tripled since 1900.
had more than doubled since 1900.
had increased by half since 1900.
had remained the same since 1900.

By the 1930s the African American population of the Midwest and Northeast had more than doubled since 1900.

Explanation:

Given that the African-American population in the aforementioned regions was 500,000 people in 1900, and said population increased to 1,250,000 30 years later, to determine the population growth rate during that period, the following calculation must be performed:

1,250,000 / 500,000 = X

2.5 = X

Thus, the African-American population in these regions increased by 2.5, that is, more than doubled during that period of time.

the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.