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.
I’m

c. taught scientists many new things about the earth, but not other planets.

explanation:

united states government;

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.