a mer' i kan, (1) of
North or South America; (2) of the United States or its
was such an impressive speaker for the
abolitionist movement that many opponents claimed
he had never actually been a slave.
led two expeditions into the West, one to find
the source of the Mississippi River and one to
find the source of the Missouri River. Although
both expeditions failed to achieve their ultimate
goals, the second one did result in the discovery
of Pike's Peak.