The answer is concrete.
<span>The Romans' ingenious use of concrete was
instrumental in the construction of the great cathedrals of Europe 1,000 years
later. Vaulting of concrete completed the building of the great cathedrals and amphitheater
of the Romans. It also made the Pantheon dome and the Palestrina’s Sanctuary of
Fortuna Primigenia. </span>
Before the battle began, usually soldiers are made to do several repetitive things, such as <span>Stand downs-get ready for the attack; Breakfast and Weapon cleaning, Inspection, and Chores.
After the battle, the trenches became a nightmare. Since a lot of dead soldiers lying on the trenches, the smell was really unbearable and the whole place always invested with rats</span>
New job opportunities is one of the answers.
Farming gave low wages compared to industrial work
houses were thought to be of better quality in the cities compared to farms and towns <span />
Cave and rivers and maybe mountains
