Final answer:
An Adoption Agreement regarding Agency Plans ensures continuity of legal responsibilities. The clause from the U.S. Constitution cited confirms that all pre-existing debts and engagements would remain valid after ratification.
Step-by-step explanation:
An Adoption Agreement as it pertains to the Agency Plans refers to the acceptance and implementation of constitutional or legal provisions by an agency. In the historical context of the United States, the quoted text relates to a clause from the U.S. Constitution ensuring the continuity of legal responsibilities. Specifically, this clause addresses the concern that all debts contracted and engagements entered into before the Constitution's ratification would remain valid.
This principle helped to reassure creditors that the new government would honor the financial obligations that had been established under the Articles of Confederation. It emphasized the legality and binding nature of such obligations with the transition to the new framework of governance laid out by the Constitution.