Answer:
Abraham Gesner, geologist, author, chemist, inventor .
Explanation:
Gesner invented kerosene oil and, because of his patents for distilling bituminous material, was a founder of the modern Petroleum Industry.
Valdimir held a baptism for all the citizens of kiev in the Dnieper River.
Answer:Historians use historical maps for several purposes: As tools for reconstructing the past, to the extent that maps provide records of features, landscape, cities, and places that may not exist any more or that exist in dramatically transformed form. As records of certain historical processes and relationships.
Explanation:
