When did Georgia's first constitutional convention take place?

The first constitutional convention in Georgia took place in 1776, coinciding with the broader context of the American Revolution and the colonies' efforts to establish their own governance systems separate from British rule. This convention was significant as it marked the beginning of Georgia's transition to a self-governing entity, culminating in the adoption of the first state constitution during that same year. This document reflected the revolutionary ideals of democracy and was designed to set forth the framework for the government of Georgia in an era where colonial governance was being rejected.

The other options relate to significant periods in Georgia’s history but do not pertain to its first constitutional convention. The convention of 1787 was focused on revising the Articles of Confederation, while 1861 and 1865 relate to events surrounding the Civil War and the Reconstruction era, which involved different constitutional considerations for Georgia.