Answer: D
It allowed sailors to know their direction.
Explanation: its obviously not any of the others and compasses tell direction
Thank you for your statement, really helped me!
<span>The religious history of the United States began with the first Pilgrim settlers who came on the Mayflower in the year 1620. Their Protestant faith motivated their movement as a community to the New World from Europe where they could practice in peace. The Spanish set up a famous network of Catholic missions in California, but they had all closed long before 1848 when California became part of the U.S. </span>
I believe the answer would be all of the above.