Which of the following statements best describes environmental changes caused by westward railroad expansion?
a. western forests were cut down for lumber for railroad and bridge construction.
b. western factories were built in what had been wooded rural areas.
c. changes occurred only in the western plains, where animal populations decreased.
d. the railroad expansion caused no environmental changes in the west.

Read the following passage. the early mill girls were of different ages. some were not over ten years old; a few were in middle life, but the majority were between the ages of sixteen and twenty-five. the very young girls were called "doffers." they "doffed," or took off, the full bobbins from the spinning frames, and replaced them with empty ones. based on the passage, early mill girls were mostly young. were mostly middle aged. were of a variety of ages. were mostly children.

Which options accurately describe life events of explorer jacques cartier? (select all that apply.) (a) cartier established a colony near roanoke island in present-day north carolina. (b) cartier named canada after the huron-iroquois word for settlement, kanata. (c) cartier led three expeditions to canada and claimed the land for france. (d) cartier established the first permanent british north american colony.

List five north american and european countries in the non-communist bloc