Compared to the american federation of labor, the knights of labor faced difficulty because it
suffered from disputes between skilled and unskilled workers.
had a larger membership, which made it more difficult to organize.
lacked a strong, committed leader.
refused to allow certain groups to join.

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.

The mongols were descendants of a. pastoral nomadic tribes b. tibetan tribes c. shang nobility

The expansion of the railroad networks led to