Which statement is untrue about Dr. Jonas Stalk? Question options: A:He patented the polio vaccine so people could only buy it from him. B: He helped create a flu vaccine during WW2.C: His work helped modern vaccines to be developed. D: He developed a vaccine for polio by 1955 .

Define the term universal male sufferage and give examples of when it affected the revolutions of 1848

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

How could indian agents profit their assignments?