In the early 1950s, dr. jonas salk developed an effective vaccine for what childhood disease? a) polio eliminate b) measles c) chicken pox d) typhoid fever

Which elements are part of group culture ? choose all answers that are correct a. resources b. history c. population d. language

Which of the following describes a similarity between the american revolution and the french revolution? o a. both resulted in the creation of constitutions that are still in use. o b. both were influenced by enlightenment thinking about equality. o c. both rose out of the desperation caused by economic collapse. o d. both involved a colony revolting against an imperial government.

How did the british show bad leadership during the battle of the somme