PEPIN THE SHORT had done a great deal to unite the kingdom; but when he died, he left it to his two sons, and so divided it again. The older son died in a few years; and now the kingdom of the Franks was in the hands of Charlemagne, if he could hold it. First came trouble with the Saxons who lived about the lower Rhine and the Elbe. They and the Franks were both Germans, but the Franks had had much to do with the Romans, and had learned many of their ways. Missionaries, too, had dwelt among them