Henry wanted an alliance with them as they were rich and powerful and he could use them as protection against France.
Treaty of Medina del Campo:
Terms:
Marriage between Arthur and Catherine
Showed recognition from major European power and signified Ferdinand thought Henry’s position on the throne was secure
Took a long time, Ferdinand kept stalling - one of them could’ve died during that time
Dowry worth £40,000 paid in installments
Spain promise not to help any English rebels
Possible trade deals
If either country goes to war with France, other will immediately intervene
Reduced threat of Auld alliance
Henry’s Marriage negotiations 1501-09: