Download our free AP U.S. History Study Pack that covers the content you need to review for your exam. https://marcoap.co/studyguide In this video, John Moscatiello, founder of Marco Learning, reviews Key Concept 4.2 of APUSH, focusing primarily on innovations in technology, agriculture, and commerce. These advances powerfully accelerated the American economy, precipitating profound changes to U.S. society and to national and regional identities Download free practice tests for APUSH here: https://marcolearning.com/free-practice-tests ----------------------------- Instagram: @marcolearning TikTok: @marcolearning Twitter: @marcolearning Facebook: @marcolearningap #apush #apushistory