A national anthem is a song that the people of a country use to remember and respect their country.
Some countries, like Spain, have a national anthem which has no lyrics (words of a song)
Images for kids
Early version of the "Wilhelmus" as preserved in a manuscript of 1617 (Brussels, Royal Library, MS 15662, fol. 37v-38r)
Rouget de Lisle performing "La Marseillaise" for the first time
In Spanish: Himno nacional para niños