Make a timeline of events from messy notes

Make a timeline from my notes.

Notes (messy): [paste]
Scope: [start to end if known]
Subject: [optional]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. Ordered timeline.
2. Gaps where dates are missing.
3. Cause/effect arrows in plain words.
4. A three-date version to memorise first.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, steps or official URLs you're not sure of. UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.