Answer:
a. the latitude of Greenwich, England
Explanation:
- The Greenwich lies on the prime Median and shows the east and west direction and it measures the north and south of the equator and is defined in terms of the parallels to the greater circle as the equator.
In the western front, they used Trench Warfare Method
In Trench Warfare the opposing teams would build some sort of trench surrounding their defended area to prevent the the opposing team in invading their protected Area. It's best used as a Defensive method which require the armies to stay hold and defended their position. That's why they're not moving so much
