Original: The Laws in Wales Acts of 1535–42 annexed Wales as part of England, the 1707 Acts of Union brought England and Scotland together under the Parliament of Great Britain, and the 1800 Act of Union included Ireland under the Parliament of the United Kingdom and Ireland.
Simplified: The 1707 Acts of Union brought England and Scotland together under the Parliament of Great Britain, and the 1800 Act of Union included Ireland under the Parliament of the United Kingdom.