America's emergence as an active, operational world-power did not occur until the 1940s. During World War II and then beyond, America's industrial, military, and other capacities were finally evident as the strongest in the world. It was World War II which both marked and to a large extent caused this phenomenon.
The conclusion of the Cold War was marked by the dissolution of the Soviet Union in 1991. This event effectively ended the ideological and geopolitical struggle between the United States and the Soviet Union that had defined the post-World War II era. The fall of the Berlin Wall in 1989 and the subsequent reunification of Germany also symbolized the end of the Cold War. The conclusion of this conflict led to a significant shift in global power dynamics and the emergence of the United States as the world's sole superpower.
A couple of events come to mind, part of the winning side in WW1 and WW2
World War I is significant because it marked the debut of many new types of weapons and was the first huge war to benefit from technological advances in radio, electrical power, and other technologies
Some of the results of the Spanish Armada were the Spanish economy was in trouble. The gold and the silver that Spain received from the Americas caused high inflation.It signaled the decline of great European power. It also caused Spain's economy to crash. This defeat proved that England had the power to defend itself. And in the end, England remained an independent and Protestant nation.
One of the main accomplishments of Philip II of Spain was the expansion of Spanish territory and influence during his reign, particularly through the acquisition of Portugal in 1580, which unified the two crowns under his rule. This consolidation of power allowed him to control vast colonial territories in the Americas, enhancing Spain's wealth and dominance in global trade. Additionally, his support for the Spanish Armada aimed to assert Catholic dominance in Europe, although it ultimately ended in failure. Overall, his reign marked a significant period of Spanish imperial expansion and cultural influence.
Supreme commander in chief of allies
The Spanish American War.
Emergence of monopoly power and concentration
The conquest of Constantinople
No single event marked Rome as the dominant power in the Mediterranean. It was more of a process than an event, one which involved victories in wars. One was the Pyrrrhic War. The First and Second Punic Wars established Rome's dominance in the western Mediterranean. The Roman-Syrian War and the Third and Fourth Macedonian Wars made Rome the great power in the eastern Mediterranean and the Third Mithridatic War ended challenges to her power and led to her dominance over Turkey and the Levant.
Both Britain and France challenged Spanish power in the Americas.
The President of India.
how did the panama canal increase americas power in the world
The Berlin Conference of 1884-85 regulated European colonization and trade in Africa during the New Imperialism period, and coincided with Germany's sudden emergence as an imperial power.
When the Tang Dynasty finally rose to power as a ruling empire.
great britains emergence as a major naval power
The conclusion of the EDSA People Power Revolution in 1986 was the ousting of President Ferdinand Marcos from power and the installation of Corazon Aquino as the new president of the Philippines. This event marked the restoration of democracy in the country and the beginning of a new era of government.