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

Base your answer for this question on the statement below and on your knowledge of social studies.my fellow citizens, events in iraq have now reached the final days of decision. for more than a decade, the united states and other nations have pursued patient and honorable efforts to disarm the iraqi regime without war. that regime pledged to reveal and destroy all its weapons of mass destruction as a condition for ending the persian gulf war in 1991.…— president george w. bush, march 17, 200344 which action did president george w. bush take following this statement?