I believe the answer is Observations.
Mayan civilizations made architectural designs to use time and days.
I hope this helps!
The reason why immagrants didnt go to the south because of slavery.
Answer:
This is what i found "On September 27, 1940, the Axis powers are formed as Germany, Italy and Japan become allies with the signing of the Tripartite Pact in Berlin. The Pact provided for mutual assistance should any of the signatories suffer attack by any nation not already involved in the war. This formalizing of the alliance was aimed directly at “neutral” America—designed to force the United States to think twice before venturing in on the side of the Allies."