Answer:
They developed many new techniques for buildings and construction of all types including the invention of concrete, Roman roads, the invention of Roman arches, and incredibly well built aqueducts that ran for miles before they reached the end and delivered fresh water.
Answer:
C) land
Explanation:
Because it is affecting the soil, which is the land :)
Answer: It increased, more unemployed people.
Explanation: For protection, to make sure local people didn't steal the food for their own sustenance.
