How to settle the western territories
I would say the importance of it.
Studying history helps us understand and grapple with complex questions and dilemmas by examining how the past has shaped (and continues to shape) global, national, and local relationships between societies and people.
Different parts of Earth's surface receive different amounts of sunlight (Figure below). The Sun's rays strike Earth's surface most directly at the Equator. This focuses the rays on a small area. Near the poles, the Sun's rays strike the surface at a slant.
Many factors, both natural and human, can cause changes in Earth's energy balance, including:
Variations in the sun's energy reaching Earth.
Changes in the reflectivity of Earth's atmosphere and surface.
Changes in the greenhouse effect, which affects the amount of heat retained by Earth's atmosphere.