Answer:
There were several events that contributed to the rise of imperialism, but one of the most significant was the Industrial Revolution, which began in Great Britain in the late 18th century and spread to other parts of Europe and North America in the 19th century.
The Industrial Revolution created a demand for new markets and resources to fuel the factories and industries of Europe and North America. As a result, European powers began to look to other parts of the world, such as Africa and Asia, as sources of raw materials and new markets for their goods.
Another key factor that contributed to the rise of imperialism was nationalism. Nationalism is the belief in the superiority of one's own nation and the desire to expand its influence and territory. European nations began to compete with each other for colonies and territories, in part to show their strength and power.
Finally, advances in technology, such as steamships, telegraphs, and machine guns, made it easier for European powers to project their military power and control distant territories. This allowed them to conquer and colonize large parts of Africa and Asia, creating empires that would dominate the world for centuries to come.