What significant event was guaranteed to Mexico in the 1944 Mexican-U.S. Treaty?

The 1944 Mexican-U.S. Treaty, officially known as the Treaty Relating to the Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande, established a framework for water management and allocation between the United States and Mexico. A significant aspect of this treaty was the commitment made by the United States to provide Mexico with a guaranteed annual allotment of 1.5 million acre-feet of water from the Colorado River.

This water allocation was crucial for supporting agricultural activities in Mexico, as well as helping to meet the water needs of its growing population. The treaty not only represented a vital agreement regarding transboundary water resources but also illustrated the cooperative nature of water management between the two nations, especially in light of their shared water sources.

The other choices reflect amounts that were not specified in the treaty, confirming that the actual guarantee was indeed 1.5 million acre-feet. This allocation has had lasting implications for both countries' water policies and their approaches to managing shared water supplies, making it a pivotal moment in the history of water rights and management in the region.