What do you think happens once a location has become too arid for people to farm or raise livestock

Gettysburg address question what do you notice about the length of this address? why do you think lincoln made it so short?

Why was frederick douglass encouraged by the dred scott decision?

According to ohrp, a problem is an “unanticipated problem” when it meets which of the following criteria: unexpected, related or possibly related to the research, suggests that the research does not put the subjects or others at greater riskunexpected, related or possible related to the research, suggests the research puts subjects or others at greater riskunexpected, unrelated to the research but still occurring with a subject, suggests the research puts others at greater riskexpected, related or possible related to the research, suggests the research puts others at greater risk