NEED HELP I WILL GIVE BRAINLIEST PLEASE What caused the great economic inequality between the rich and poor during the Progressive Era?

People who remained on farms were stuck in poverty.
Urban factory workers had to live in crowded tenements.
Business owners did not share profits with their employees.
There was a large wave of people emigrating from poorer countries.

Brainliestttme : ) what are trading blocs and what is the impact of international cooperation?

Which is one reason many african nations have not prospered after gaining independence from european colonial powers? a. colonial powers sent their weakest economic advisors to the new countries, and their recommendations were flawed. b. independence left them with weak economies, and many countries have been unable to overcome or recover from these burdens. c. the desert region of the interior is inhospitable to foreign investors, and business interests focused on the coastal mediterranean cities. d. the money endowed upon independence is still tied up in the bank of england, which is hesitant to make loans to struggling nations.

What was the main cause of the russian revolution? a. the protests against the war with poland b. the tremendous war losses of world war 1 c. the protests against the treaty of brest- litovsk d. the losses dictated by the treaty of versailles