I believe the answer is: <span>1000 Feet
The lights on your vehicles served as a tool to help other drivers identify your position from the distance even under darkness or fogs
By doing this, you and the other drivers could prevent the risk of colliding with each other.</span>
Gold is valuable in ancient Africa, so was salt, diamonds were valuable too. Sand wasn't because you could find that anywhere.
Hoped I helped!
According to the church year, the short season of Epiphany marks the manifestation of Christ to the world.