What is vitrical and horizantail?

What is the origin of the woman's first name Sharon? The breakup of the Roman Empire happened? How did the term trenchcoat originate? What structure is associated with the Oculus? Was burping at the table in the middle ages acceptable? What new religion appear in the roman empire in the first century AD? Where does the name Dennis come from? When was the Cyrillic alphabet first established? Where did the Walts originate? What factors motivated europeans participate in a crusade? Howand why did slavery start? What established the legitimacy of the Papal States? Does cultures sometimes borrow from other cultures? What was the longest canal in the world in the western hemisphere? What moved the Line of Demarcation a little further west in 1494? Who was an early christian martyr who refused to blaspheme god? Why did the byzantines distrust western christians after the crusades? Why were westerners less supportive of slavery than easterners? Who lead the fourth crusade? What is the western calendar called?