What injustice did muckraker lincoln steffens uncover? unsafe tenements child labor political corruption trust agreements

Political corruption

Explanation:

The muckraker Lincoln Steffens was well-known for having exposed the corruption of municipal governments in various American cities. His articles were later published together in a book titled The Shame of the Cities. Steffens was a muckraker, which were journalists who wrote during the Progressive Era and focused on social problems such as corruption.

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

hope this !

i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.