Answer :
Final answer:
The concept of Manifest Destiny, which suggested a divine endorsement for American territorial expansion, was introduced by John O'Sullivan in 1845. It played a significant role in the political and social climate of the period, leading to the annexation of new territories and the war with Mexico.
Explanation:
Manifest Destiny Introduced by John O'Sullivan
In 1845, John O'Sullivan, a New York newspaper editor, introduced the concept of Manifest Destiny. This term embodied the mindset that the United States was divinely ordained to expand across the North American continent. This expansionist belief was not only rooted in the idea that it was America's fate to spread and cultivate the land but was also used to justify the annexation of territories like Texas and Oregon. O'Sullivan's assertion influenced the political and social climate of the time, leading to the election of James K. Polk and the subsequent war with Mexico, which resulted in the United States acquiring additional territories, including the coveted California.
The phrase Manifest Destiny suggests a divine endorsement for American territorial expansion. It reflects a time when Americans embraced their growth across the continent with a conviction that it was their right and duty. The concept of Manifest Destiny was especially evoked during debates and was supported by politicians such as Senator Thomas Hart Benton. It had profound implications for the indigenous peoples and the inhabitants of the territories that were annexed or conquered.
