The US proved that it had the industrial strength and man power to become a world power
Some of the social similarities between classical Greece and Rome are as follows:
1. Within both Greece and Rome there was social classes. This class system was created by wealth differentiation amongst the citizens. The social classes within Greece were; slaves, freedmen, metics, citizens and women. While in Rome there were; slaves, freedmen, plebeians and patricians.
2. Both Greece and Rome practiced polytheistic religion. This means that they believed in more than one gods.
The Progressive era was an Era that lasted from 1820 to 1920, it was a collection of ideas and activities about how to fix many problems in American society.
They aimed to stop Senate corruption because, at that time, political machines often influenced the election of senators in exchange for federal contracts and jobs. So the progressists proposed the direct election of senator by all states voters. This was passed by the 7th Amendment.
Manifest Destiny was a distinctly racist concept in the first place. The idea was that white man was destined to conquer the west and this meant subduing anyone else who happened to live there. White man alone was entitled to this "destiny". It used the ideas of Jacksonian democracy of a "white man's democracy" to develop these beliefs.