What is jonas salk known for? question 3 options: developing a vaccine to prevent polio. advancing the science of plant genetics. creating new agricultural methods. becoming the first person to walk again after being paralyzed by polio.

What is one way scalawags were significant during the reconstruction in the south?

The person who has the job of maintaining order in the house is the sergeant at arms. majority whip. speaker of the house. president of the house.

Which statements describe how reformers fought for social change in the progressive era? check all that apply. 1. they founded a state university to promote industrialization. 2. they began a civil rights movement to promote equality between races. 3. they made it legal to manufacture and sell alcohol. 4. they built thousands of new schools and required attendance. 5. they promoted abstinence from alcohol and supported prohibition.