The class of workers where Johnson place writers of dictionaries is those "who toil at the lower employments of life." This refers to the people with low paying jobs. These people have fears, knowing that they are going to be punished if they don't succeed.
B. Roots
Roots are the smallest meaningful parts of words. For example the root word of aquamarine would be Aqua, which means water. So the root word can also give you a hint on the meaning of the word.
Hope this helps :)
They needed to set up a new government and wanted to be sure it could not harm their rights.
I think politics would be the answer but I’m not sure maybe history
