The correct answer to this open question is the following.
The question does not include options. We do not know the name of the individuals you are referring to. You also did not mention what period in the history of the US you are referring to.
So although your question is incomplete, we can help you answer in the following general terms.
We assume you are referring to the Progressive era in the United States history from the 1880s to the 1920s.
During this era, many reformers demanded changes in US politics and economics. After many injustices lived during the Gilded Age, muckraker journalists exposed the corruption activities of many legislators and politicians. The federal government created legislation to stop this situation and also created laws to eliminate monopolies in the economy.
So we can say that reformers built a foundation to change the political and economic scene in the US, as well as society.
They were busy dealing with the great depression
Although there was marked shift in the collective consciousness of the
society after The Enlightenment , towards a more progressive scientific
society, but I would say the ideologies of Capitalism and Socialism came
into existence only after The Industrial Revolution. Not to mention
that the Industrial Revolution itself had its origin in the era of
Enlightenment.
Thomas Jefferson was a large follower of neoclassicism, and made the architecture of the government buildings follow the neoclassical themes and designs. Neoclassicism is a movement that stylizes romantic elements from the classical age (Ancient Greece, Rome) that influences the design of buildings, arts, etc. Jefferson was a supporter of the movement, designing his own home at Monticello with Greco-Roman influence as well as most government buildings in the US.<span />