UK History: Chapter 6, Exercise 3 — Possible Solution
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HOW HE SECURED HIS POSITION
- Backdated his reign to 21 August 1485.
- Married Elizabeth of York in 1486, uniting the two claims.
- Suppressed the rebellions of Lambert Simnel and Perkin Warbeck.
- Restored the finances, through Archbishop John Morton.
- Made alliances by marrying his children (Spain, Scotland) and a trade
  agreement with Burgundy (1496).

NOT TOLD
How secure his position really was, or how historians rate his reign; the
sources give the measures, not their effectiveness.