There are historical data that tell us that the habit of standing during the national anthem happened during a ceremony at West Point in the year 1891. However, in 2009 there are data that at an NFL sports ceremony , it was established that the players had to remain standing as the American anthem sang. In 1918, as an extra data, it began to popularize playing the anthem in baseball games, to encourage people to attend the game even in times of World War I, and later also played in American football.
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Encouraged the League of Nation to intervene.
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William Wilberforce
William Wilberforce (24 August 1759 – 29 July 1833) was a British politician, philanthropist, and a leader of the movement to abolish the slave trade.
Explanation: i am not sure about the other answer choices
Emphasis of harmony with nature
