Large numbers of immigrants arrived in the United States between 1820 and 1850. Which groups tended to become farmers on the western frontier? English and French immigrants French and Irish immigrants Irish and German immigrants German and Scandinavian immigrants. PLEASE I NEED THIS ASAP

Why was it decided in potsdam that certain industries in germany would be disabled? a. to deplete resources that might prevent germany from coming to power again b. so that a portion of the eastern region of poland would be fused together with the soviet union c. to allow the allies to focus their war efforts in fighting the last part of the war against japan d. to provide economic aid for iran's government since large war demands were made on them