Learn.

Taiwan makes the overwhelming majority of the world's most advanced computer chips, so nearly every phone, car, and AI data center depends on a small cluster of fabs on one island.

The Suez Canal is the shortcut between Asia and Europe that carries a large slice of world trade, so when it closes the whole global economy feels it.

Australia mines the most lithium today, but a huge share of the world's reserves sits under the salt flats of South America's lithium triangle.

The Mongol Empire was the largest contiguous land empire in history, about 24 million square kilometers of connected territory ruling roughly a quarter of all people alive.

Norway banks its oil income in the world's largest sovereign wealth fund and spends only the returns, while Saudi Arabia routes oil revenue straight into subsidies and the yearly budget.

About a quarter of the Netherlands sits below sea level behind an engineered wall of dikes and polders, while Bangladesh is not mostly below sea level but sits so low on a giant delta that flooding is a constant threat.

You learn geography as an adult not by cramming but by short, spaced sessions that make you recall places from memory and tie each one to a mental map and a reason it matters.

Chunk the world by region, anchor each new country to a neighbour, trace the coastlines, and space the reviews out. With a five card demo of the mechanic.