The transition from nomadic hunt-and-gather groups to more complex societies based on agriculture (and the specialization and segmentation of work) allowed for the development of sedentary cultures which established

Easier life for us humans. Since the stage of "hunt and gather" has been replaced with sedntary cultures, now we dont have to do the things people did back then. Example hunt, move place to place to find food, walk, send mails or go directly to a person to talk to them. Now we have become lazy leting technology do the life things that people did back then without us needed to even get off of our feet to do them we can just do them directly from our homes throught the internet.

Explanation:

answer; (a) he was a u.s senator for 38 years;