The Prophet Joseph informed us that the record of Lehi, was contained on the 116 pages that were first translated and subsequently stolen, and of which an abridgement is given us in the first Book of Nephi, which is the record of Nephi individually, he himself being of the lineage of Manasseh; but that Ishmael was of the lineage of Ephraim, and that his sons married into Lehi's family, and Lehi's sons married Ishmael's daughters, thus fulfilling the words of Jacob upon Ephraim and Manasseh in the 48th chapter of Genesis, which says: “And let my name be named on them, and the name of my fathers Abraham and Isaac; and let them grow into a multitude in the midst of the land.” Thus these descendants of Manasseh and Ephraim grew together upon this American continent, with a sprinkling from the house of Judah, from Mulek descended, who left Jerusalem eleven years after Lehi, and founded the colony afterwards known as Zarahemla and found by Mosiah—thus making a combination, an intermixture of Ephraim and Manasseh with the remnants of Judah; and for aught we know, the remnants of some other tribes that might have accompanied Mulek. And such have grown up on the American continent.
Three routes would have been available to them once they reach America:1) sailing inland along the St. Lawrence River directly into Lake Ontario 2) up the Hudson River and along various inland rivers to Lake Ontario 3)up the Mississippi River and through the Great Lakes to Lake Erie, disembarking at the mouth of the Buffalo River, or perhaps further north along the shores of ancient Lake Tonawanda, the 58 mile long inland sea the Jaredites referred to as the sea that divided the land.