These song lyrics contain an ambivalent reference to the Holy Alliance, which was concluded at the Congress of Aix-la-Chapelle making the withdrawal of foreign troops from France possible. While praising the peace granted by the monarchs, the lyrics proclaim a (just as) Holy Alliance of the Peoples.
Chansons Politiques De Béranger: La Sainte Alliance Des Peuples, coloured lithograph, 16,6 x 21,8 cm, year unknown, artist unknown, printed by De l'imprimerie de Tencé frères; image source: Bibliothèque nationale de France, RESERVE QB-370 (77)-FT4, http://gallica.bnf.fr/ark:/12148/btv1b6955666m, public domain.