Which factor restricted the growth of labor unions during the late 1800s

Most employers were very hostile toward workers' efforts to organize. Most factory workers were satisfied with their wages and working conditions. The Federal Government declared that unions were illegal.

Explanation:

the aztecs painted books and kept records

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.