Which era began in Europe after the collapse of the Roman Empire?

How did rhe transcontinental railroad effected westward migration

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

The georgia platform showed that most georgians ~accepted the compromise of 1850 and wanted to stay in the union. ~rejected the idea that compromise was necessary to maintain the union. ~accepted the idea that slavery was evil and must be ended. ~hoped the compromise of 1850 would break the union apart.