1. The crew and supply the ship can carry and handle.
2. The period and duration of exploration. The main issue of every travel and exploration was the time it took the ship from its origin to the supposed destination. The new types of sailing ships was more improved applied with machinery as the centuries past and traveling went from years to months to days.
3. In times of war or conflict
It help us see with out candles consally burnig and people burned them self a lot less
Settlers in India, also are the first known culture of India.
Answer:
Japan is the oldest country in the world.
A native American shelter