How did the french explorers learn how to make boats suitable for the coastal waters

This map shows north korea and south korea today. how does this map reflect the impact of the korean war?

Describe the differences of 89 and x is 47

1. america's first national road morse 2. joined lake erie with the hudson river cooper 3. steam-driven locomotive erie canal 4. allowed businesspeople to keep in touch with trends cumberland 5. telegraph code fulton 6. clermont telegraph