<u>Answer</u>:
Major industries were connected with petroleum refining, manufacturing of steel, and power generation sectors as well. The abundance in these areas was due to wide raw material availability of oil, timber, iron and steel.
Such industries were successful because of the demand they faced for such outputs of production.
Labor unions have been originated from the US, where they were formed to promote safe working conditions and security for the working population and is still in great practice changing millions of lives today.
They accomplished the trust that the working population don’t face the heat of the work they do, get their salaries in regard with the work they do and living their lives hassle free.
Answer: The balance of slave states and free states was kept equal.
Details: The Missouri Compromise (1820) admitted Missouri into the Union as a slave state with Maine being added as a free state at the same time, to keep the balance of slave and free states equal. It also prohibited any future slave states north of the latitude line 36 1/2 degrees north of the equator in territories of the Louisiana Purchase, with the exception of Missouri (north of that line) being admitted as a slave state.
By definition, Latifundia means highly mechanized commercial operations that yield high returns for low investment in labor. When latifundia becomes more mechanized, f<span>armworkers are leaving the land for the cities since it only depends more on machines and automatic devices. Hope this answers your question. </span>