The Western Holy Roman Empire re-emerged after 300 years strengthened into a foundation that set the beginnings of early Europe. List 5 events that made this possible

This is what i found on google “the first mobile phone call was made 40 years ago today. on april 3, 1973, motorola employee martin cooper stood in midtown manhattan and placed a call to the headquarters of bell labs in new jersey.” i hope this you for what your looking.