During the early 1800s, immigration in the united states was unrestricted
primarily because
(a) such restrictions were deemed unconstitutional
(b) labor unions called for new immigrant labor
(c) southern plantations needed additional workers
(d) the industrial economy was creating new jobs
(e) the view that the united states was a melting pot became prominent

What was one important characteristic of the russian military during world war i? a. it had more advanced military technology than its western european allies. b. it was an all-volunteer military that enjoyed high morale throughout the war. c. it defended russian territory but refused to attack german positions d. it was unable to provide its forces with adequate weapons and supplies.