Why did spain never invade portugal?

Question:

You would think in the middle ages or something they would have tried to take it over or something, or is my knoweldge of history wrong.

Additional Details

5 days ago
Quote myself "or is my knoweldge of history wrong" I didn't say it was fact people

Best Answer - Chosen by Asker: 5 days ago
Quote myself "or is my knoweldge of history wrong" I didn't say it was fact people