C, cause the sail actually gave more crew men jobs, also adding members to ships, employing more people
is there any options <span />
The United States uses Fahrenheit
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
Independent ?
Hope that helps
