Originally Posted by Island of 1,000 Condiments

All we know is that Madara summoned the Kyuubi against Konoha when the Yondaime reigned. However, was it ever even implied that he could do so 48 years prior? [Konoha was founded 60 years before the start of Naruto. Kyuubi attacked twelve years before. 60 - 12 = 48.]