The Message About the Past

Dear Time Traveller,

I know you are going to the mideval times so now I just want to warn you. Be on the look out for invaders they storm villages and towns killing all in their path. Also as you will travel to the past a devestating disease is spreading all across Europe. It is called the Black Death. The name already tells you about the disease, it kills. These are just some things you need to watch out for your mideval trip. Take note of these words, "be Careful!"