After which event were Georgians given another opportunity to participate in governance?

The correct choice is when Georgia became a royal colony. This event marked a significant transition in governance for the colony, as it shifted from being a trustee-led entity to direct control by the British crown. Under the trustee system, the ability of residents to participate in governance was severely limited, but as a royal colony, there was an introduction of a more structured government, including a council and assembly that allowed colonists greater participation in decision-making and self-governance. This transition provided the populace with a chance to engage more actively in the governance of their colony, thus enhancing their political involvement.

The other options represent important historical milestones but do not directly relate to a new opportunity for Georgians to participate in governance. While the Declaration of Independence was pivotal in asserting American independence from British rule, it did not specifically enhance governance participation for Georgians at that time. Similarly, the end of the Civil War and the ratification of the Constitution were significant for civil rights and constitutional law but followed the establishment of governance structures that were already in place. Therefore, the change to a royal colony is the most fitting event that led to increased governance participation for Georgians.