Why were labor unions necessary? a) men and women needed labor unions so that they would receive equal pay b) factory workers needed to fight for better working conditions c) politicians wanted workers to have better standard of living d) factory workers needed labor unions for better health insurance coverage

The correct answer is B.

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.