What major constitutional change has occurred for Scotland in the past century?

The devolution of powers to the Scottish Parliament represents a significant constitutional change for Scotland that has had profound implications for its governance and political landscape. This process, which began in the late 1990s, resulted in the establishment of the Scottish Parliament and the transfer of certain legislative powers from the UK Parliament to Edinburgh.

Devolution allowed Scotland to gain a degree of autonomy over various areas such as education, health, and justice, enabling it to tailor policies to better fit its specific needs and preferences. This change was pivotal in addressing long-standing calls for greater self-governance and representation, particularly in light of Scotland's distinct cultural and political identity.

The establishment of the UK Parliament and the introduction of the Euro currency do not reflect changes specific to the last century related to Scotland's autonomous governance, while the removal of all local government authorities is not accurate since local authorities still play a role within the devolved framework. Thus, the devolution of powers is recognized as the major constitutional change that has empowered Scotland and reshaped its political framework.