Are there any policies for Manifest Destiny?

Because I couldn't find any except expansion on wiki.

The policies of Manifest Destiny were the expansion across the North American continent, from the Atlantic seaboard to the Pacific Ocean.

So that's the only policy?

and Manifest Destiny's importance in conveying a major theme of our history at the time would be the same?

The major theme was the arrogance that the U.S. had the right to grab and control any land it wanted -- especially if it was contiguous to the existing nation.

Manifest Destiny was a belief held by many Americans in the 19th century that it was their divine mission to expand and settle across the North American continent. It shaped U.S. expansionist policies during that time. While there may not be specific "policies" explicitly labeled as Manifest Destiny, there were governmental actions and decisions that reflected this ideology. Here's how you can explore this topic further:

1. Historical Documents: Read primary sources like speeches, letters, and official government documents from the 19th century to understand the perspective and intentions of politicians and leaders during this era. Pay attention to the language and ideologies conveyed.

2. Presidential Actions: Study the decisions made by U.S. presidents during the period of Manifest Destiny. Look into the policies related to territorial expansion, treaties with Native American tribes, and diplomatic negotiations with other countries.

3. Congressional Acts: Explore legislation passed by the U.S. Congress during the 19th century that impacted territorial acquisitions or westward expansion. Examples include the Homestead Act of 1862, the Indian Removal Act of 1830, and the Treaty of Guadalupe Hidalgo in 1848.

4. Historical Analysis: Consult academic sources like books, scholarly articles, and reputable websites that provide an in-depth analysis of Manifest Destiny, its origins, and its influence on U.S. policy. These sources often explore the political, economic, and cultural factors behind the expansionist mindset.

By examining these primary and secondary sources, you will gain a more comprehensive understanding of the policies pursued by the United States during the era of Manifest Destiny, even if they are not explicitly labeled as such.