{"type":"rich","version":"1.0","title":"Westward Expansion Vocabulary","description":"Key westward expansion terms including Manifest Destiny, Louisiana Purchase, Oregon Trail, gold rush, Homestead Act, transcontinental railroad, reservation, and Trail of Tears.","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1780944069966&hashid=yGjxzn69K6","html":"<iframe src=\"https://arcade.padlet.com/embed/yGjxzn69K6\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}