Which of the following describes a major cultural achievement of the classical greek civilization?

a. equality between men and women of the same social class
b. the creation of one of the earliest monotheistic religions
c. the establishment of the mandate of heaven ideology
d. a system of philosophy based on logic and argument

i believe the answer is a

china has confucianism thats everywhere in asia but it isn't really a religion.  

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

according to this text from the preamble to the declaration, who gives men their unalienable rights?