What is MCMCLV?

Did the dutch start the slave trade? Which barbarian kingdom ruled in the area that is present-day Spain? How did the europeans view themselves during slavery? Do the dates on the invasions of the Roman Empire map suggest an invasion of people or a migration of people? How is soap the yardstick of civilization? Who paid the voyage of Pedro Alvarez Cabral? What did the emperor Constantine do in AD 313? How was west Africa effected by the Atlantic slave trade? What role do cultural hearths play in changing cultures? What development helped the monarchs of Europe form strong central governments during the late Middle Ages? Why did the fall of the roman empire lead to a new age in western Europe? How did cattle get from Abilene to Chicago in the cowboy era? Who is the guy who invented the toilet? What happened during the fourth crusade? What entertainment did the gladiators give? Who was Constantine married to? Was Elizabeth a medieval queen? What were the causes of the mining boom in the west? Who would dress a noble in the medieval times? What happened in the crusades 900 years ago?