What developmental concept had its beginnings during The Spanish American War?

The developmental concept that began during The Spanish American War is the Seizure of Advance Naval Bases. This period highlighted the strategic importance of establishing forward positions to support naval operations and ensure supply lines. The war demonstrated that to extend naval power effectively, it was essential to have access to nearby bases from which to launch operations, conduct repairs, and sustain forces.

During the conflict, the U.S. military recognized the need to project power beyond its shores, leading to the establishment of bases that could serve as critical staging points. This concept laid the groundwork for future military strategies, particularly in the context of global operations, where access to advanced bases became vital for maintaining operational readiness and effectiveness.

The other options, while relevant to naval operations, did not specifically gain their foundational concepts during The Spanish American War as distinctly as the seizure of advance naval bases did. Each of the other choices represents important aspects of military strategy, but their development was shaped in different contexts and time periods.