How did horace mann’s educating role impact american society?

Horace Mann had a huge impact on education, in Massachusetts and nationally.  He is best known for his policy on compulsory education--free elementary school education for all.  This was in mid-nineteenth century Massachusetts.  He is almost as well known for the founding of "normal" schools to prepare elementary teachers, often a one or two-year course of training after grade 10 or so.   Among the first two normal schools were Bridgewater Normal School (where I grew up--in its shadow) and Framingham Normal School.

D) unified country [tex]is \: correct \: /tex]

Sorry, idk! i wish i could ya out : (