Las epidemia y las pestes eran muy comunes y solian matar a millones de persona es social o politico

The answer is option a. boundary line drawn by pope alexander iv in 1493.

Could you provide the video? : )

All federal judges are appointed by the state president and must go through congress for approval 

True blindness may be caused by trauma to the eye, severe conjunctivitis due to  ibr (infectious bovine rhinoceros) or pink eye or other infections, leptospirosis, lead poisoning, selenium toxicity, fungal infections, vitamin a  deficiencies, rabies, vitamin b12 deficiency, neoplastic of the orbit or  conjunctiva, cataracts, congenital malformations, etc.