Which aspect of Roman city life contributed to the spread of disease?

A. the sewer system
B. poorly built housing
C. a lack of running water
D. the aqueduct system
IF U R FOR SURE THE ANSWER IS RIGHT AND I GET IT RIGHT I WILL MAKE U BRAINLIEST

Select the equations in which w=100 makes the equation true. select all that apply. a.) 0.54÷w=0.0054 b.) 4,086÷w=4.086 c.) 362.7÷w=3.627 d.) 5.3÷w=0.0053 e.) 21.9÷w=0.219

How did the constitution of 1917 try to resolve some of the problems that started the mexican revolution

How were the okanogan highlands formed? a. by subduction, which caused huge folds in earths surface b. as a result of retreating glaciers carving great valleys into the earth c. when molten rock from under the earth approached the surface d. when the collision of volcanic island chains and ocean rocks formed new earth