Many countries have a day for national celebration. Might be when the country became independent or another major event in its history.

The French celebrate July 14. Because on that day in 1789, in the midst of the French Revolution, the people stormed the most hated prison of them all, the Bastille in Paris.

In Sweden, the National Day is June 6. On this day in 1523, Gustav Vasa was elected king of Sweden…