What cause the renewal of interest in the classical civilization of greece and rome

Select all that apply. the tang dynasty interacted with foreigners by: a letting them buy property in china. b accusing them of corruption and the downfall of the dynasty. c trading with them, especially japan and korea. d teaching them to become monks. e attacking them with military forces.

Which statement best describes a contribution of the works of nicolas copernicus and galileo galilei?

Which of the following was probably the most difficult challenge facing construction of the railroad?