Select all the correct answers.
in what three ways did the chinese develop the perpetual calendar wan-nien-li?
a.) they observed the sun's longitude and the moon's phases.
b.) they used measurements from a sundial and a water clock.
c.) they determined the dates of the two solstices in a year.
d.) they mapped the constellations in the night sky.
e.) they surveyed citizens about how many days there should be in a year.
choose 3 answers

ANSWER:

A.) They observed the sun's longitude and the moon's phases.  

B.) They used measurements from a sundial and a water clock.

D.) They mapped the constellations in the night sky.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

uhh idk for sure but i think it makes it difficult to pump the oil through the oil rigs