I would said the answer is " <span>It allowed for important discoveries such as the circulation of blood through the body" </span>
Answer:
poll workers having voters read aloud before voting to prove they could read
Explanation:
In the United States, the fifteenth amendment established the right of citizens of the US to vote regardless of race, color, or condition of servitude. It was ratified in 1870 after its passage by the Congress in 1869.
Hence, in the attempt of poll workers in the Southern states to continue segregation at the polling unit, the scenario that might have taken place at a southern state polling center in the wake of the Fifteenth Amendment being ratified is "poll workers having voters read aloud before voting to prove they could read."
Well do you mean like how one invention of the light bulb was made but then it help make a car?