In 1893 the last monarch of Hawaii, Queen Lili'uokalani, was overthrown by party of businessmen, who then imposed a provisional government. Soon after, President Benjamin Harrison submitted a treaty to annex the Hawaiian islands to the U.S. Senate for ratification.
He succeeding in paying off the national debt for a while, which could have enticed other countries to trade with the U.S, that and he made money safer to store and withdraw out of banks.
It was the name of the boundary that divided Europe at the end of WW2