Plsss helpp , marking brainliest as well

The order would be 7000 BC then 6000 BC, then AD 250 and finally AD 450.

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.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.