Be that as it may, in the latter part of January 1847 the disparate parts of the fledgling German Communist movement began to congeal in a single organisational entity when the London center of the League of the Just first broached the idea of organisational unity with the Communist Corresponding Committee.[7] A letter of 20 January 1847 by Schapper requested that Marx join the League in anticipation of a scheduled London congress at which a new set of principles would be adopted based upon the ideas previously expressed by Marx and Engels.[8] Both Marx and Engels were persuaded by the appeal and they both joined the League of the Just shortly thereafter, followed by other members of the Communist Corresponding Committee.[8]