What was an effect of the Union's naval blockade of the Confederacy?

Why were factories a good source of income? select all that apply. -they produce goods at an exceptionally fast pace. -they build a sense of community among workers. -they often employed low wage earners. -they employed women and children at disgracefully low wages. -labor unions to establish good working conditions.

The christians in jerusalem met in the catacombs for their worship service

Which best describes the impact of the crusades on european exploration?