A direct democracy
Explanation I do research
I believe the answer is: indirect benefit
Indirect benefit refers to the type of benefit that we had from the action or existence of another people. In the example, the bond that formed between the two did not necessarily exist because of their actions/behaviour but because of their similar experience of taking care of other people.
The answer is: Group polarization
Group polarization refers to the situation when the members of the group are forced to comply to a more extreme action/principles than what they're usually more inclined to do.
Internet servers are often become a good medium for such group polarization because they are unregulated and the members of the group face no opposing views that challenge their group's principles.
Answer:
Jay Cooke & Company failed, negatively impacting stocks.
Answer:
If you buy two new games, your opportunity cost is the time you could spend talking on the phone.
Also you didnt give enough material so im almost sure this is right.