When Lehi left the ‘Old World’ his group consisted of less than twenty people. Yet, nineteen years later the people had so prospered in the land that they built a temple which
“…manner of the construction was like unto the temple of Solomon, and the workmanship thereof was exceedingly fine.”
see The Book of Mormon, (Salt Lake City, UT: The Church of Jesus Christ of Latter-day Saints, 1977), 2 Nephi 5:16; page 61.
However, Solomon’s Temple required 30,000 Israelites, 150,000 hewers of stone and carriers, 3,300 supervisors and about 7 years of construction.