The work of Jonas Salk contributed to the trend shown on this graph
Select one:

developing the x-ray machine.

finding safer ways to perform amputations.

introducing a new vaccine.

perfecting the refrigeration of medicines.

Which statement describes an important outcome of the congress of vienna? a. napoleon launched his final european military campaigns. b. european states had their borders clearly defined. c. jewish people were given equal right in germanic states d. the slave trade became increasingly important to european economies.

What is the relation between the hover dam and the gold rush

Forty years later, the fall of saigon remains a pivotal and emotional event to many. you will now conduct research to find two find two different representations of this historical event. first, you will find an image connected to the fall of saigon. then, you will find a second source of your choosing that represents the same topic