Isolationism
because they are isolating themselves from the rest of the world. they wanted to focus on protecting themselves from the north so a takeover from the Mongols would never happen again. thus they stopped making ships and cut themselves off from everyone else.
Subject specific or statistical info but i would go with subject specific
Answer:
January 3, 1921 – Began flying lessons with Neta Snook.
July 1921 – Bought first plane, the Kinner Airster (named “The Canary”)
October 22, 1922 – Broke women's altitude record when she rose to 14,000 feet.
Explanation:
also dont click the link to the other one your welcome :)
Provide for the common defense
