The second option of next, best fits the descrpition
Answer:
It was in the late 1960's.
Explanation:
It was tranferred through mosquitos (like malaria) and was in the United States.
The immediate result was that over 650 000 people were given the rights of voting, and numerous city-states were given the status of separate parliamentary boroughs.
Yes, it can, depending on the word. Prefixes, however, almost never change the root word. The most common changes of a root when adding suffixes are the removal of a final E that follows a consonant (e.g. diving), or the change of a Y to an I (e.g. silliness).