URGENT
Who was the Jewish American medical researcher and virologist that developed the vaccine for the crippling disease of polio in the 1950s?

©2012 the exploration company which battle took place mainly on land? (5 points) select one: a. battle of the coral sea b. battle of midway c. battle of the philippine sea d. battle of okinawa

How does the grapes of wrath identify the effects of americans' views on the dust bowl? the story is a depiction of oklahoma farmers and the difficulties they experienced migrating to california. the story accurately describes the impact the california vineyard industry had on migrant workers. the story covers the rise of corporate farming and the devaluation of the small family farms that dotted the great plains. the story is an allegory for the conflicts between american values and the rise of the communist party in the united states.

To keep other european powers from threatening its empire in america, spain sent soldiers, settlers, and?