Final answer:
The provided materials do not detail specific agreements made for the Texas Rangers. Further research using additional historical sources is needed to find accurate information.
Step-by-step explanation:
The student's question seems to be asking about the benefits or agreements made for the Texas Rangers due to their effectiveness. However, the provided reference materials don't contain specific information about rewards or agreements made specifically for the Texas Rangers. They do discuss various historical conflicts and measures taken by the Mexican government to manage the settlers and land issues in Texas, as well as problems with fence cutting and rancher disputes. Additionally, information about the Bracero Program and the border violence involving the Texas Rangers is presented, yet none of these speak directly to the government compensating the Rangers.
Given the available information, no conclusive answer regarding the government's agreement to reward the Texas Rangers for their service can be provided. It is suggested that the student may need to research this topic further using additional historical sources to find the specific details regarding the agreements made for the Texas Rangers.