A) a barter system that does not rely on money or other currency.
Answer:
Coordination problem.
Explanation:
Coordination problem often associated with Game theory, most especially prisoner's dilemma, is a term that describes "game" with multiple outcomes, such that participants have to decision on how to act.
In this case, the Republicans are having Coordination problem because, they have disagreement about which particular member of their party would be the best choice for the party at presidential election.
For the most part, banking created a better capital's movement within the European continents. It make it easier for the traders to make their payment and the traders also do not need to bring their payment during the transport and risk getting raided in in the middle of the process
hope this helps
C) everpation and transportation