Which of the following marches is composed by John Philip Sousa?

John Philip Sousa (1854 – 1932) was an American composer and conductor of the late Romantic era known primarily for American military marches. Known as “The March King” or the “American March King”, he composed 136 marches from 1873 until his death.

One of Sousa's marches, “Across the Danube” (key A♭ / D♭ ) was composed in 1877. The Danube River was one of the borders of the Ottoman Empire, which was regularly at war with czarist Russia. In their fourth extended war, the Russians gained one decisive victory by crossing the Danube in June and July, 1877. Sousa credits the inspiration for “Across the Danube” to one such victory of Christendom over the Turks, and it was probably the news of this particular battle which caught his fancy.

Among Sousa's best-known marches are "The Stars and Stripes Forever" (National March of the United States of America), "Semper Fidelis" (official march of the United States Marine Corps), "The Liberty Bell", "The Thunderer", and "The Washington Post".

As for other three, “Viribus unitis” is by Austrian composer Johann Strauss Jr. (1825-1899), “Pomp and Circumstance Marches” by English composer Edward Elgar (1857-1934), “Colonel Bogey March” by English composer Kenneth J. Alford (1881-1945).