By means of excavations and the study of the areas that lived in as well as the careful study of there remains to study there health and if there where identifiable diseases that they suffered and other things of this nature <span />
Answer:
Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations.
While, B. Constantine, reigned as emperor from 306 A.D to 337 A.D., Christianity began to transition into the dominant religion of the Roman Empire.
