Who's efforts in the 1940s and 1950s has nearly eliminated and widespread, deadly disease?
a. vladimir zworykin
b. norman borlaug
c. jonas salk
d. marshall mcluhan

Which statement best describes the response by the united states and its allies to the berlin blockade? planes dropped tons of supplies around the city each day. trucks smuggled tons of supplies into berlin about once a week. tons of supplies were delivered to west berlin by boats. tons of supplies were purchased from east berlin each day.

Who was the first explorer to sail all the way down the mississippi river

The habsburg family rose to power and took control of the?