William McKinley served a single term as the 25th President of the United States, between the years of 1897 and 1901. He did get elected for a second term, but he got assassinated 6 months into his second term. He was a great wartime leader, as he led the US into one of its first international victories in the Spanish-American war. He also raised tariffs in order to protect the American economy.
He was also adamant in maintaining the nation's gold standard, and he rejected all inflationary proposals. This sits in stark contrast to how the economy of the US and other developed countries in the world works today, where the state tries to find an optimal level of inflation in order to discourage the hoarding of money, while also making it easier for businesses to borrow currency.