“A COMPREHENSIVE STUDY OF AGENTIC AI SYSTEMS: EXPLORING THE EVOLUTION FROM PREDICTIVE MACHINE LEARNING MODELS TO AUTONOMOUS, GOAL-DIRECTED, AND DECISION-MAKING ARTIFICIAL AGENTS IN COMPLEX ENVIRONMENTS” (2026) Journal of Integrative Science and Societal Impact, 2(1), pp. 91–100. doi:10.29121/JISSI.v2.i1.2026.37.