A quality 30 with lots of detail. Certainly some well used tropes here, but that works well in a 30. I like the inter-linkage between them that suggests the plots that could arise from using the lot of em.
A continent is home to large, leathery flying beasts with a wingspan of over 70ft. Though shy, herbivorous and easily scared, it is possible that an enterprising person could domesticate them. They would be useless in war due to their timidity, but excellent if used for commercial air travel.