The answer is B. They promised to improve the economy.
A big change was Germany forming out of Austria, Hungary, Prussia & other small nations forming the country we know today as Germany. United KIngdom owns ireland & Scottland. Some Russian land is broken into smaller nations as well.
By lowering the reserve requirements, banks are able to loan more money, which increases the overall supply of money. But, by raising the banks reserve requirements, the money supply could decrease. If banks are giving fewer loans in this title I would say their money has decreased. There is no sign of economic growth based on reading the quote, I think the best answer would be B.
Either resource allocation or government regulation