What is important when looking at a historical source

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

What lured the spanish to the area of oklahoma?

One of the main things that tobacco did for jamestown was to?