Question

1. which american philosophy most contributed to the \closing\ of the western frontier?

natural law
equality for all
manifest destiny
american exceptionalism

Explanation:

⚡ Using what you learned: westward expansion policy and outcomes

Step 1: Define the "closing" of the Western frontier

The "closing" of the frontier refers to the point in American history (officially noted in the 1890 census) when there was no longer a clear line of unsettled land in the West. This was the result of rapid settlement, railroad construction, and resource exploitation across the continent.

Step 2: Identify the driving philosophy

The primary 19th-century philosophy that drove this rapid westward migration was Manifest Destiny. This belief held that the United States was divinely ordained to expand its democratic and cultural institutions from the Atlantic to the Pacific coast, directly motivating the policies and settlement patterns that settled the frontier.

Answer:

Manifest Destiny