Internal boundaries
Census
Reapportionment
Redistricting
Cracking
Packing
stacking
Ethnic cleansing
terrorism
Voting district
gerrymandering
unitary state
NATO
Federal state
Autonomous regions
Balkanization
supranationalism
irredentism
USMCA
WTO
OPEC
Trade agreements
military alliances
United Nations
Supranational org.
European Union
ASEAN
African Union
Failed state
centrifugal
centripetal