How many Western Europeans died from Black Death?

How did the grooms national product (gnp) of the united states change between 1940 and 1944

Which of the following best describes the geography of oklahoma? a. extreme elevation differences b. varied ecological regions c. limited, mountainous geography d. flat rolling hills to below sea level areas

What did president roosevelt do to aid panama in becoming an independent country? a. he negotiated a peace treaty with nicaragua to purchase the land. b. he invaded colombia to establish a us base for defense. c. he placed warships around panama to block sea lanes. d. he used dollar diplomacy to block imports to nicaragua.