3. describe where the plague spread and name some of the places that it directly affected. how long did it take to spread to those areas?

The chinese exclusion act was the first significant law restricting immigration into the united states. why do you think the us government singled out chinese immigrants in particular for exclusion?

The united states economy makes up how much of the worlds economy

Which describes a significant different between the north and the south in the year leading up to the civil war