What were the challenges not faced by the Explorer in the ship

There are many challenges faced by the explorer in the ship.

Explanation:

The explorer faces many challenges in order to explore the world. They move from one region to another through sea in ships. These ships have no navigation system, the maps that were present in that time were not accurate. These explorer risks their lives by travelling in the ships because when the storm hit the ship, there is very little chances of survival. These ships were made of wood so high chances of damage when hit with the big stone.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail