The Great Wall of China

Today it is a tourist attraction but for thousands of years it served as protection and a barrier from invaders from the north. OK Let’s Learn about this engineering marvel. Reach out for questions, feedback and future episode suggestions: Okletslearnpodcast@gmail.com Go to our new website- okletslearn.com Support the podcast and be named a producer of the show here at this Patreon link: www.patreon.com/okletslearn OK Let’s Learn Substack page: https://substack.com/@kevinokeefe165051?r=6vm...