When did the modern age start and end?

The modern age is generally considered to have started in the late 15th century, around the time of the Renaissance, which began in the 1400s. It is often marked by significant events such as the fall of Constantinople in 1453 and the discovery of the Americas in 1492. The modern age is typically said to have ended in the late 18th century, with the onset of the Industrial Revolution and the subsequent changes in society and technology. However, some historians extend the timeline into the 19th or even 20th centuries, depending on the context.