Listen to the lecture on Imperial Ambitions and Sectional Crises from 1842-1861 and submit your lecture notes by Friday, November 20 at midnight.Also, read Chapter 13 – Antebellum Idealism and Reform Impulses, 1820–1860 and Chapter 14 – Troubled Times: the Tumultuous 1850sThis a low-stakes assignment to help you prepare for the final examhttps://openstax.org/books/us-history/pages/14-introduction