Why did fighting on the western front of world war i become a stalemate with high casualties but little progress?

What directive in source a might have been at the root of the action described in source b?

Which of the following two groups did not do battle with the romans? select all that apply.

The directory was unsuccessful and was eventually replaced because no constitution had been created that outlined its authority. it was connected with the reign of terror. its members did not get along with napoleon. the national convention did not agree with the directory's decisions.