Who appeared to Zhang Daoling and gave him authority to create a beliefs and rituals based on Taoism? Chuang Tzu
Lu Van
Zhuangzi
Laozi

isaac newton first proposed that earth was not perfectly round. instead, he suggested it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator.

the idea of the earth being a flat disc is also inconsistent with the fact that a given lunar eclipse is only visible from half of the earth at a time. the only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient greeks deduced that this must mean the earth is spherical.

during the hitler era and it caused them to declare war on germany