From CK-12, U.S. History Sourcebook - Basic covers U.S. history from Colonial America through World War I. This book provides high school U.S. History teachers and students with sets of primary and secondary sources about important topics. Some teachers will use it as a supplement to a traditional textbook. For those looking to leave the textbook behind entirely, it will provide a course with basic structure and continuity, and will reduce the burden of finding new primary sources for each class meeting. However, it is not yet comprehensive enough to meet the coverage requirements of, for example, an Advanced Placement test.

This is a simple but effective lesson plan that adds to a Social Studies Unit on Early American History that concentrates on the core topics of Manifest Destiny and key events leading up to the start of the U.S. Civil War.

It focuses on the U.S. Presidents of this time period (1841-1857) and their contributions.

In which John Green teaches you about the Mexican-American War in the late 1840s and the expansion of the United States into the western end of North America. In this episode of Crash Course, US territory finally reaches from the Atlantic coast to the Pacific Ocean. After Oregon was secured from the UK and the southwest was ceded by Mexico, that is. Famous Americans abound in this episode, including James K Polk (Young Hickory, Napoleon of the Stump), Martin Van Buren, Zachary Taylor, and Winfield Scott. You'll also learn about the California Gold Rush of 1848, and California's admission as a state, which necessitated the Compromise of 1850. Once more slavery is a crucial issue. Something is going to have to be done about slavery, I think. Maybe it will come to a head next week.

Chapters:
Introduction: Texas & California
Manifest Destiny
The Oregon Trail
Western Settlements
How Texas Became a State
Polk's Wars for Expansion
Critics of the Mexican-American War
The End of the Mexican-American War
The Know-Nothings
The California Gold Rush
Mystery Document
California & the Free Soil Party
California Statehood and the Compromise of 1850
The Problem with Manifest Destiny
Credits

Overview: Lesson seeds are ideas for the standards that can be used to build a lesson.  Lesson seeds are not meant to be all-inclusive, nor are they substitutes for instruction.  This lesson seed provides a compelling question and a bank of sources to use to drive an inquiry based lesson or a potential Evidence Based Argument Set (EBAS).  When developing lessons from these seeds, teachers must consider the needs of all learners.  Once you have built your lesson from the lesson seed, teachers are encouraged to post the lesson that has emerged from this lesson seed and share with others. Essential Question: Analyze the causes and consequences of westward expansion.

Openendedsocialstudies.org created this collection of background readings, images, and questions on William Walker and U.S. imperialism in the years between the War with Mexico and the U.S. Civil War. The College of Wooster also hosts a webpage dedicated to Willam Walker's adventurism which includes primary documents, timelines, an historical context essay, discussion questions, and additional resources. https://williamwalker.voices.wooster.edu/

The period between the end of the Mexican-American War and the U.S. Civil War included numerous attempts by U.S. business interests to expand into Central America. William Walker was interested not only in the mining, banana plantations, and possible canal, rail, and steamship routes to connect the East and West coast of the United States but also in the expansion of slavery into the tropical climate of the region.