What cultural practice is the mississippian civilization best known for?
a. sailing across the atlantic ocean
b. building large mounds on the earth
c. creating artwork in religious temples
d. starting a democratic government

B.  building large mounds on the earth

Explanation:

the Native Americans from this civilization were called "Mound Builders" and they built more than 5,000 mounds

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;