Final answer:
The key agent of change in Globalization 1.0 (A.D. 1492-1800) was technology, particularly the advancement of military power.
Step-by-step explanation:
The key agent of change in Globalization 1.0 (A.D. 1492-1800) was technology, particularly the advancement of military power. During this time, countries like Portugal and Spain used their military and exploration capabilities to expand their presence in the Atlantic Ocean and compete for control. The use of horsepower and wind power allowed these countries to exert control over the politics of the globe. This period set the stage for later colonization in the Americas.