How can the modern era be distinguished from other eras in history

Ancient history refers to the time period beginning with the first records in writing, approximately 3600 BCE. It ends with the fall of several significant empires, such as the Western Roman Empire in the Mediterranean, the Han Dynasty in China, and the Gupta Empire in India, collectively around 500 CE.

The Bronze Age is the time period in which humans around the world began to use bronzeas a major metal in tools. It is generally accepted as starting around 3600 BCE and ending with the advent of iron in 1000 BCE.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

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