The technique of Robert Browning in "my last duchess" is known as a dramatic monologue. This is so because all the poem is expressed in one voice only, as oppossed to a dialogue, where more voices would appear. And it is dramatic because it contains all the elements of drama.
Dred Scot was taken to live in St.Louis by his slaveholder. this is because during his trial, he stated that since his slaveholder had taken him to live in a free state, that meant that he was now a free man. hope this helps!
This is true.
For example, this is the case with hate speech laws. Since it is not precisely defined or understood what hate speech actually constitutes, many and no things at the same time can be considered to be hate speech, so it can be used politically to reduce the freedom of expression and the rights given to people by the first amendment.
The main reason why such a large portion of the population during this time in the United States shifted from rural to urban areas was because industrialization had created many more employment opportunities in the city factories.