by Leo Song https://padlet.com/mgsong22/5hpniwk4wwhq en-us 2015-09-17 02:50:10 UTC 2026-01-19 03:32:36 UTC hello@padlet.com Writing system https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046863 2015-12-11 02:00:53 UTC https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046863 Wheels https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046872 2015-12-11 02:00:58 UTC https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046872 irrigation https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046894 2015-12-11 02:01:26 UTC https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046894 Code of Hammurabi https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046949 2015-12-11 02:02:28 UTC https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86046949 Money https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86047110 2015-12-11 02:04:56 UTC https://padlet.com/mgsong22/5hpniwk4wwhq/wish/86047110