The promise of a sum of money called The Equivalent helped motivate a faction that supported this event, the Squadrone Volante.
On the day of this event, a cathedral's bells played the tune "Why Should I Be So Sad on My Wedding Day?" Tensions prior to this action were raised by the hanging of alleged pirate Thomas Green in the Worcester affair and the passage of the Wine Act, which allowed trade with France. The promise of a sum of money called The Equivalent helped motivate a faction that supported this event, the Squadrone Volante. This event effectively repealed the Act of Security, which would have allowed the rejection of (*) Electress Sophia and her heirs. One side of this event agreed to it partly due to the financial ruin caused by the disastrous Darien Scheme. This event led to the creation of a new flag that combined the crosses of St. Andrew and St. George. For 10 points, name this 1707 action that joined the two kingdoms on the island of Great Britain.
On the day of this event, a cathedral's bells played the tune
union of England and Scotland [or equivalents; accept Act(s) of Union; or Treaty of Union]