Which heading should replace the question mark in the chart below?

year

?

1918

1.4

1919

1.4

1920

5.2

1921

11.7

unemployment rate in percent

immigration from asia in millions

immigration from europe in millions

women in the workforce in percent

Unemployment Rate in Percent is the correct answer because 18.8 percent of women were in the workforce in the early 1900's" and 1910 micro data show that the average unemployment rate among non-farm gainful workers was 5.3%.

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful

Italy , germany, austria, japan, and brazil.