Why did the animals join together and meet in the barn? explain what old major believes to be the source of all the animals' problems? the book is animal farm plzzz first one is brainliest. 18 !

moon-letters were a method of writing invented by the dwarves. moon-letters were ordinary runes, but written in such a way that they could only be read when the light of the moon shone behind the writing. some moon-letters could be read by any moonlight, but it was possible to make the writing even more secret. more sophisticated moon-letters could only be read by the light of the same shape of moon, or at the same time of year, as when they were written. hope this !