What exact year was 2500 years ago

Explanation:

BC is the number is years before counting years began. Basically, it is just like a negative number, where the smaller the number after the negative sign, the larger it is. For example, -4 is more than -6. To solve this, we take away 2500 from 2020.

2500 - 2020 = -480

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.