Answer:
The most suitable answers are,
- Permanent settlements were established.
- Communities could store a surplus of food.
Explanation:
The major changes, or the revolutionary changes were the transition of the human society from a Hunter-Gatherer state to an agricultural civilization. Because of this, the Normadic and travelling nature of people gradually changed and the people settled in agriculturally resourceful areas, paving the way to the oldest civilizations to emerge!
D. They secured the U.S. border of the Oregon Territory by negotiating a treaty with England.
y = 38
x = 15
Since both sides are congruent and there's a 90 degree angle established and triangles are equal to 180 at means that each sides has to equal 45.