Answer:
C. Doctors have been unable to develop a vaccine.
Explanation:
The problem was an increase in the number of cars.
Many people will tell you that Los Angeles is the city of the automobile. They famous LA highways and roads are featured in many forms of art be that movies or novels. The car is a symbol of Los Angeles. But that also created many problems such as high traffic, which results in long standstills and increase in pollution.
Monroe doctrine
Monroe doctrine warns European countries to not colonize or puppet monarch
Answer:
The answer would be B.
Explanation:
Women could not vote until the 19th amendment.
The change in the election process was the 17 amendment.
Black men could not vote until the 15th amendment.
The change in minimum voting age wasn't until the 26th amendment.
