(Solution) HIST405 Week 3 Discussion: Manifest Destiny and the Mexican War of 1846

Required Resources
Read/review the following resources for this activity:

  • Textbook: Chapter 8 (section 8.3), 11
  • Lesson
  • Minimum of 1 scholarly source (in addition to the textbook)

Initial Post Instructions
For the initial post, pick two (2) of the following historical events:

  • The Lewis and Clark Expedition
  • The Missouri Compromise
  • Independence of Texas
  • Mexican War of 1846-1848
  • The California Gold Rush

Then, address the following for your selections:

  • Which of your two selections do you consider most impactful on Westward Expansion during 1800-1848? Explain why.
  • Analyze the effects of the ideology of Manifest Destiny on the two historical events that you chose from the list.

Follow-Up Posts
Compare your selections and analysis of selections with those of your peers. If they chose different events, examine how yours are similar and/or different. If they chose the same events, build on their posts by providing additional information about the events that you have not already noted in your own post.

Writing Requirements

  • Minimum of 3 posts (1 initial & 2 follow-up)
  • APA format for in-text citations and list of references


The colonists were convinced that it was their divine right and destiny to occupy the whole of the North American continent (Corbett et al., 2018). The ideology behind the Manifest Destiny was that the colonists were an example to the world and had been tasked with the responsibility of remaking God’s world. John O’Sullivan defined the ideology as “the beginning of a new history, the formation, and progress of an untried political system, which separates us from the past and connects us with the future only” (Michigan State University, n.d).  As such, they were committed to westward expansion. Expansion occurred during and through events such as the Mexican War of 1846 to 1848 and the California Gold Rush. The Mexican War started when the Mexicans killed 16 American soldiers. Although the American president was already considering going into war, the act prompted him to act. President Polk told Congress…Please click the icon below to purchase the full answer at only $5