eunion1-10, Exercise 1: The thread

Model answer (one possible answer):

Chapter 2: control of coal and steel was shared under a High Authority, and a common market followed in 1957. Sharing stalled on the defence community, rejected by France in 1954, because armies are a core symbol of sovereignty.
Chapter 4: single-market rules were shared and decided by majority, then a currency. Sharing stalled where the UK and Denmark kept opt-outs, and taxes and budgets stayed national.
Chapter 7: rescue funds, joint borrowing for the recovery and a common response to the war in Ukraine advanced sharing. It stalled on asylum shares, defence and foreign policy, and much of fiscal policy.

The pattern: practical, limited steps advanced; steps touching armies, taxes or borders under pressure stalled.