https://padlet.com/jsellen1/wzekgb9b1fpl8rm7 John Gast painted "American Progress" in 1872. What messages is the painting intended to convey? en-us 2020-10-21 16:34:45 UTC 2025-12-06 15:06:37 UTC hello@padlet.com jsellen1 https://padlet.com/jsellen1/wzekgb9b1fpl8rm7/wish/849466699 2020-10-21 16:37:21 UTC https://padlet.com/jsellen1/wzekgb9b1fpl8rm7/wish/849466699