How did Portugal economically benefit as the first Christian kingdom to established trade and educational relations in Africa?

How w. e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?

Take another look at the population pyramid for france in 1950. notice the disparity between the male and female populations in the 55 to 70 year-old age group. what historical event could account for this disparity?

How and why did british north american colonists fight a revolution to create a constitutional republic, the united states of america?