C1CSE One Learn

General Studies I · Subtopic

Redrawing national boundaries

Official syllabus

History of the world will include events from 18th century such as industrial revolution, world wars, redrawal of national boundaries, colonization, decolonization, political philosophies like communism, capitalism, socialism etc.— their forms and effect on the society.

UPSC CSE 2026 notification

What this covers

Boundary change should be studied as a political process involving war, diplomacy, nationalism, imperial collapse, secession, unification and administrative inheritance. Maps show an outcome but do not explain whose claims prevailed, which populations became minorities, or why a settlement proved stable or contested. Compare cases through the prior political order, competing territorial claims, decision-making forum, demographic complexity, external intervention, population movement and institutional settlement. Connect boundary making to citizenship, minority protection, security dilemmas and later conflict.

Key ideas

  • Nation state and territorial sovereignty
  • Diplomatic settlements
  • Unification and secession
  • Imperial collapse
  • National self-determination
  • Minorities and population movement
  • Border disputes
  • Maps chronology and comparative cases

Connected topics

Official wording is from UPSC's Civil Services Examination 2026 notification, the current baseline for CSE 2027 preparation. Always check the latest notification at upsc.gov.in. Scopes and key ideas are CSE One's study map and are being expanded.