the answer is D. Germany.
The government has to let people believe whatever they want (freedom of religion)and write whatever they want(freedom of press)
If you ware talking about Porfirio Diaz, he ruled a total of 3 1/2 decades. Tell me if you need the exact years.
Brown v. Board of Education was a landmark case in which it was finally proven that segregation in institutions of education was highly unconstitutional, so you could say that that is the greatest effect since it made other schools become open for everyone as well.
Explanation:
a. They wished to limit government by dividing it.