Canada is having a rare moment on Broadway — “Come From Away,” a musical written by a married Canadian couple, set in Newfoundland and celebrating Canadian decency, has just opened at the Schoenfeld Theater. The show was already drawing an unusually high number of Canadian ticket-buyers, even before this week, when it hit the apotheosis of Canadianness: The country’s prime minister, Justin Trudeau, attended with a group of 600 allies and diplomats.

When American voters cast their ballots for President Theodore Roosevelt in 1904 they probably didn’t expect that his daughter Alice, already known for her rebellious larks, would turn out to lay groundwork for diplomacy that would end the Russo-Japanese War.