C and d have to do with the upper classes and how they (mostly) utilized labor. Populists were more concerned with how to make things work for them (a bit cynical on my part).
The progressives (particularly women and labor leaders) were very concerned about working conditions and how to improve them.
B<<<< answer
The school system in India has four levels: lower primary(age 6 to 10), upper primary(11 to 12), high(13 to 15) and higher secondary(17 to 18). The lower primary school is divided into five”standards”, upper primary school into two, high school into three and higher secondary into two. Hopefully this helps you.
Generally speaking, the United States intervened in Latin American countries in the early 1900s to "<span>c. protect American lives and investments," since the Us was concerned about European encroachment in the region. </span>
Reconstruction is largely seen as a failure, and many historians believe this was primarily because the South for so long had been dependent on slaves that in one swift motion the South's entire livelihood shifted. This dramatic shift was too much for the Southerners to absorb at once, and harsh Jim Crow laws sprang up.
