Based on the clue 'about 85 of puerto ricans profess this faith most ...', what is the answer?

What is associated with: about 80 of this mediterranean islands 700000 people speak greek about 18 speak turkish? What is associated with: about 800 bishops other churchmen participated in this council i from dec 1869 to oct 1870? What is associated with: about 8000 british prisoners were taken in this last major battle of the war? What is associated with: about 80000 scots still speak the scottish version of this ancient celtic language? What is associated with: about 9 of the individual returns for 2000 checked the box to donate this much to the presiden… Based on the clue 'about 90 of all glass is made from this material', what is the answer? What is associated with: about 90 of the carving on the mountain removing about 450000 tons of granite was done using t… Based on the clue 'about 90 of the people of this country which borde...', what is the answer?