In what landmark case did the warren court ruled that an accused criminal had the right to a lawyer whether or not the person could afford one?

This may help. Okay so in the Gideon v. Wainwright case (1963), the Supreme Court ruled that the Constitution requires the states to provide defense attorneys to criminal defendants charged with serious offenses who cannot afford lawyers themselves.  At trial, Gideon, who could not afford a lawyer himself, requested that an attorney be appointed to represent him. He was told by the judge that Florida only provided attorneys to indigent defendants charged with crimes that might result in the death penalty if they were found guilty. After he was sentenced to five years in prison, Gideon filed a habeas corpus petition (or petition for release from unjust imprisonment) to the Florida Supreme Court, claiming that his conviction was unconstitutional because he lacked a defense attorney at trial. 

The activity of providing goods and services involving financial and commercial and industrial aspects.

The right of freedom of speech possibly.