Tears are made in the lacrimal glands and are a mixture of oils and water. If you don't have tears it can cause issues with your eyes becoming too dry. here is a wikipedia site about dry eye syndrome follow the link for more info!
No, this is a metaphor. The Trail of Tears was such a horrible chapter in US history. Thousands of people from the tribes who were force relocated died along the way. They were treated so poorly, and...