South America.

At times the Lord would raise up prophets who would preach to the wicked.
Usually these teachers were Nephites, but sometimes they were Lamanites.
Sometimes great numbers of Lamanites were converted to the Lord, and when
they once accepted the truth, they did not fall away so easily as their
Nephite brethren. At one time two thousand young men whose parents were
converted Lamanites did valiant service for their country and their
religion. There isn't room to tell you about the story here; but you may
read about it in the Book of Mormon, beginning with the 53rd chapter of
Alma.

When Nephi separated from his brethren, he went north and settled in a
place they called the Land of Nephi; but after a time the Lamanites again
annoyed them so much that the Lord told Mosiah, who was their leader then
to take the more faithful part of the people and again go northward. This
they did, and found a city called Zarahemla which had been built by a
people who had also come from Jerusalem at the time that city was
destroyed. The Nephites joined with the people of Zarahemla, and for a long
time this city was the capital of the Nephite people.

In time the Lamanites occupied all of South America except a small part in
the north, on which the Nephites lived. The Nephites' land also extended
far up into North America.

A little over six hundred years after Lehi landed on this continent, Jesus
appeared unto some of the righteous. Before this, however, there had been a
great storm all over the land, and many of the wicked had been destroyed.
Jesus had been crucified at Jerusalem, had risen from the dead, and now he
came to the Nephites with his resurrected body. He taught them the same