Hey there!
The ancient Greeks used direct democracy, and we use representative. The difference is that first of all, with a direct democracy, the opinions of the people directly affect the outcome of the decision being made. Those eligible to vote voted in assemblies, and the response of the majority ruled.
Here- it's a bit different. We use representative democracy- meaning that we elect representatives to vote and speak for us on the behalf of the people.
There's our difference right there. A direct democracy - like I said is where decisions directly affect outcomes, as opposed to where representatives are elected on behalf of the people to make laws and represent their voters and territory.
Your answer is C.
Hope this helps!
He was famous for discovering the real orbit of the planets and many others
"... the chief business of the American people is business." he once said.
Coolidge followed a laissez-faire economic policy, whereby the government doesn't interfere in the national economy unless absolutely necessary, and even then its actions should be limited to gentle nudges to get the economy back on track rather than large scale intervention.
So, Coolidge's attitude toward business was 'if it's not broken, don't fix it' - leave business alone to prosper.
I think that what you're looking for is Manifest Destiny, the idea that it was natural, required and proper of the settlers to expand across the continent.
Some connected this to God (that is, that God devised this expansion as His plan), but God is not always necessarily connected to this idea.