What are important events between 1400 and 1500?

Who created the bidet? Western starting point of the transcontinental railroad? What were the different divisions of the Middle Ages? Was Christopher wren married? How would Law III help guarantee a person's rights under Roman law? What did women use for their period in the 1700's? What happened during the 1600s that dramatically changed the living environment and main food source of the plains Indians? How has it been used throughout human history? In the Western Hemisphere what country received the largest number of European immigrants after the US? In The Decameron what was written about the plague? What was the largest and most powerful organization of the middle ages? What city was the center of Eastern Christendom? How did the Roman build a strong and unified empire? What is the difference between the verbs commemorate and celebrate? What day of the week was August 26 1945? What did a Roman soldier's sword cost? What year was two centuries after 1492? Did West Virginia secede in the civil war? Why did the Romans adopted part of the Greek culture? When did the Europeans start enslaving africans?