Final answer:
The Progressive Era brought about significant changes in society, including the regulation of trusts and monopolies, consumer safety laws, and the preservation of natural resources.
Step-by-step explanation:
The Progressive Era, which took place in the late 19th century and early 20th century, brought about significant changes in American society.
One improvement that still affects us today is the regulation of trusts and monopolies under legislation such as the Sherman and Clayton Acts. This has helped to promote competition and prevent the concentration of power in the hands of a few.
Another improvement is the guarantee of consumer safety through laws such as the Meat Inspection Act and the Pure Food and Drug Act. These laws ensure that the food and drugs we consume meet certain quality and safety standards.
The creation of the National Park Service and the preservation and conservation of lands through the National Reclamation Act have also had a lasting impact on society. These measures have protected and maintained natural resources and outdoor spaces for future generations.