Which astronomer thought the earth was the center of the solar system

Which of the following was a difficulty faced by the ottoman empire in the 1700s and 1800s?   a.  financial independence      b.  lack of trained artisans      c.  refusal to trade with other nations      d.  rebelling ethnic groups

President nixon resigned from office in 1974 after he was informed that the senate would impeach him, as allowed in the constitution, for his actions in the watergate scandal. one of the key reasons that nixon’s actions became public was a) the freedom of press guaranteed by the first amendment. b) the right to confront witnesses as guaranteed by the sixth amendment. c) the limitation of judicial powers as defined in article 3 of the constitution. d) the prohibition against illegal search and seizure as guaranteed by the fourth amendment.

*history * who was clyde ross and how was he impacted by housing discrimination?