Be sure to say who it is you are going to talk about and their influence in history - history could be in the person's own time (teaching students for example) all the way to the present.
Needed details about the art, writing, architecture, etc.
A few basic facts
A basic biography but should include details about his life and/or times that we need to know to understand your thesis. This could be where you explain a technique or work that you will be connecting. You might explain how things were done before this person came along or the work was created.
You can add slides to show the technique or work of art and explain its background or innovation.
Show your first connection/effect to history and give an explanation - you can use a few slides for this if you need to. You may want a picture slide or two...