The Magna Carta lead to the creation of the English Parliament, as well as the House of Commons and the House of Lords, if I recall correctly. Hope that helped.
The best term describes the population in Arabia and Iraq is, Urbanized.
The communist regime of USSR led by Gorbachev was no longer willing to intervene in the eastern countries, in a time that the countries were facing increasing pressure for freedom and liberties. The success of some early uprising in countries like Hungary endeared other countries to follow suit.
Expansive. It means that there are a lot of children, and the population is spiking.
The electoral college was formed for the people to vote, so I would say that it is a form of indirect democracy, because the people make the decision by voting but they do not make their decision directly.