The vault was a structure consisting of arrangements of arches which allowed the Romans to connect any room with the arches because they usually formed a ceiling or roof
It established a permanent method for apportioning a constant 435 seats in the U.S. House of Representatives according to each census.
Is c because the power have to divide in three branches I just do the same test
D, Intimidating The Two Empires With The Use of Guns And Horses Because, They Didn't Have Guns Then. They Didn't Have Technology Or Anything Like That At All. Hope I Helped
