Geography is important to history because it affects where a person chooses to live, it affects the way battles are fought and the way that people can interact with those living outside of their home region. Geography is the study of the Earth's landscapes, environments and the people who live in those landscapes and environments.
Geography connects the social sciences with the natural sciences through human geography and physical geography. Human geography looks at the dynamics present in cultures, societies and economies while physical geography looks at the dynamics present in the environment and the physical geographic landscapes.
There are many other reasons to study geography apart from its influence and importance in regards to historical study. Geography helps people to understand the basic physical systems such as water cycles and ocean currents that affect people's everyday lives. It can help people develop a map of their community and the world so that they understand where events are taking place. It can help people to make sensible judgments about relationships between society and the physical environment as well as to develop an appreciation for the Earth. Geography can also help a person understand global interdependence, which leads to better global citizens that can make responsible decisions about people and places.