What do each of the legislative actions have in common

Round arches allowed the romans to create structures with

Which roman emperor was responsible for a major shift in the dominate religious attitude of the roman empire?

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste