Answer:
Treaty of Velasco
Step-by-step explanation:
The battle of Gonzales in the Texas revolution happened on October 2nd of 1835.
Siege of the Alamo lasted for thirteen days and was happening between February 23rd and March 6th in 1836.
Goliad massacre when the Mexican Army killed Texan prisoners happened after the battle of Coleto, and it occurred on the 27th of March in 1836.
Treaty of Velasco was signed by Texas president David G. Burnet and Mexican General Antonio Lopez de Santa Anna. The signing happened on the 14th of May 1836. after the Battle of San Jacinto. The peace treaty agreed that the war is over, that Texas would be independent and Mexican soldiers would withdraw. The dates of the signing are confirming that the Treaty of Velasco was the last even to occur out of the group of answers.