Geography affects events. Did people live in deserts, fertile plains or dense forests? What other cultures did they live near and how did their locations influence their interactions? How did political boundaries change over time?
Geography makes history real.It's easy to forget that people long ago were actual human beings, not just characters in stories we read. Placing them in tangible places on earth turns fiction into reality.
Don't ignore this crucial aspect of your historical journey through times AND places!