They had:
1 Keeled boat light strong at least 60 feet in length her burthen equal to 8 tons
1 Large Wooden canoe
They also had horses, walked, climbed, and used pirogues. "Pirogues" is a French word meaning that they tied smaller canoes together to make a kind of raft. Their horses were certainly used as pack animals in the rough country, and for riding when they crossed the flat plains.
Lewis and clark mostly used boats.
No
Most likely, yes. Compasses were in regular use well before the time of Lewis and Clark.
Lewis and Clark used a sextant to determine their latitude by measuring the angle between the horizon and the sun or a star. This helped them navigate and map their route across uncharted territory during their expedition to the western United States.
they use deer for meet
the sextant
to death
A Gun and Fists
Wax
They were explorers. They probably needed them for defense, or other use.
yes and they ate it
they use tanks