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

Drag each label to the correct location in the table.match each event with the territory conquered by alexander the great.

The system of checks and balances was designed for what purpose? fear of strong state power to keep power out of one branch to appease the southern states to allow the judicial branch to have equal power

During the age of global expansion and encounter, many individuals brought about change. how might we prepare for changes today?