The costs of females working in silk factories was that woman couldn't work at the homes with children, and the other way around with children too. Hope this helps!
Have a great rest of the day.
The answer is B. Hope this helps.
America's economy was driven by the production and selling of cash crops during the 19th century. This was especially true for cotton. Cotton is a valuable commodity with several different uses. The development of cotton became easier thanks to the cotton gin. Due to the invention of the cotton gin, there was an increased demand for labor. This lead to the increase in the amount of slaves, especially in southern states. Essentially, the market economy and America's ability to make a huge profit off cotton resulted in an increased demand for slaves.
Many farmers desired that this institution continue to spread westward. This was due to the fact that many farmers were looking to settle west due to cheap land made available by the federal government through laws such as the Homestead Act. In order to have success on these farmers, slave owners wanted to bring their slaves with them to these new territories.
D sounds like the right answer unlike everything else.