If the government never had separate the power into three branches the government would've been anarchy government who would be greedy to share his powers to the citizens and he would ignore the concern of the citizens.
The concept of 'Western Bias' is the Eurocentric perspective of the west towards other continents such as Africa where in the western view they tend to feel as a more superior race thus creating a bias on how they view the continent. The idea developed due to the historical, political, and military dominance of the West. This was exemplified by historical writers and western philosophies such as Hobbes, and Machiavelli who developed concepts of realism while Locke & Smith developed liberalism.
FDR was elected president in 1932
B. Manifest destiny would be the answer