Himalayas

- Forms a border between India and China – two nuclear powers that don’t really align culturally – preventing significant conflict between the two
- Also serves as the water tower of Asia – source of the Indus, Ganges, Brahmaputra, Yangtze, Yellow, and Mekong rivers.
- This area of the world is highly interconnected by river networks, which made the region fertile and allowed dense populations / more surplus (and thus stronger states) early on in history.
Andes

- Runs through South America
- Split South American states into two categories:
- Atlantic states:
- Brazil, Argentina, Uruguay, Paraguay, Guyana, Suriname
- Have access to trade with most of the continent
- Have more land
- Economies are more diversified
- Stronger states
- Pacific states:
- Chile, Peru, Bolivia, Ecuador, Colombia, Venezuela
- Andes runs through them
- This means that there is weaker national cohesion / more regionalism, and lower state capacity
- Their economies tend to be more focused on mining and extracting other natural resources from the mountain range
- Can’t easily trade with the rest of South America from the wrong side of the Andes, so tend to rely more on global maritime trade
- Atlantic states:
Caucasus

- Consists of Greater Caucasus and Lesser Caucasus
- Forms a barrier between Russia and the middle east. The lesser Caucasus is more twisted / porous and generally fragments the region.
- Thus, the mountains partition the region, making it ethnically, religiously, and culturally diverse. And also hard to unify.
- Movement across the region also depends on travelling through a few key chokepoints, meaning small forces can block large ones. Thus, states here tend to be more defensive.
Pyrenees

- Separate the Iberian Peninsula from the rest of Europe, creating a stable border between Spain and France
- As a result:
- Spain and France are institutionally and culturally distinct
- France became more powerful, connected to continent while not having another border to defend; also made Paris more centralized since no frontier nobility
- Spain had naval power / was imperial and spread across the Atlantic, since it didn’t have to contend across Iberian land borders and couldn’t move across the Pyrenees
- Andorra became a stable microstate since no one gave a shit
Zagros Mountains

- Primary barrier between Persia and Arabia, making them culturally distinct
- Iran sits on a defensible plateau, making its institutions stable. Also explains why they won the Iran-Iraq war
- Gives oil / gas resources
- Houses a diversity of different ethnic groups in the mountains: Kurds, Lurs, Bakhtiari, Qashqai, Assyrians
Atlas Mountains
