Answer:
the Royal Proclamation of 1763
After Britain won the Seven Years' War and gained land in North America, it issued the Royal Proclamation of 1763, which prohibited American colonists from settling west of Appalachia.
Explanation:
The answer is Caste system (A)
Quite a few, in fact.
Major Cold War proxy wars included the Algerian War, the conflict in the Congo, the Northern Yemeni Civil War, the Sand War, the Western Sahara War, the Laotian Insurgency, the Civil War in Mozambique, and many others.
Spain and France were also among the strongest in Europe, with Portugal being a player early on because of their sea worthiness and exploration. I can’t recall of Portugal’s decline had already started by the beginning of the 17th Century, but it was getting close.