Answer:
Good question... CUZ I DONT KNOW
Answer:
Because, the United States primarily use the english language, but the contenent itself has different cultures which makes it Universal.
The age to drive should not be raised to 21. Sixteen year olds are perfectly capable of driving. They are also in high school and soon to be in college. They should be able to leave and get food as well as drive to practice if they wish to peruse sports. If you are legally mature at the age of 18. Then you should be able to drive since way before the age of 21 at least.