What is occlemency?

Did the crusades have an impact on the discovery of America? Why did some European cities become centers of culture and trade? What was the attitude to magic in the 1500s - 1600s? Where did most of the fighting take place during the crusades? When did the steamboat happen? How was safety in medieval times? What were forms of entertainment during the middle ages? Which crusade was the least successful why? Where did the name Stephanie come from? Did people in the 1600s have last names? What were the mills used for in the middle ages? Where did the saying from cradle to grave come from? What is the past tense of vain? Why did cowboys drive their cattle north from Texas along the Chisholm Trail? What year was it 32 years ago from 2017? Does Marc bolan have children? How was Jacques cartier honored? Where did the first immigrants to the Western Hemisphere come from? What were Europeans searching for when they first reached the Americas? What is the name given today for the site chosen for the 'Habitation' in 1608?