In the early 19th century, free-market systems of the northern United States helped promote the early stages of the?
a, sugar boom
b, gold rush
c, the textile industry
d, cattle market

According to the qianlong emperor, why was china not interested in importing anything else?

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

2. what was the dred scott decision about? what do we learn from this supreme court case?