Casual conversation vs. formal public speaking (differences)

Casual Conversation:
The volume of your voice is calm but enough for your voice to be audible.
Having a causal conversation usually focuses on many different topics.
Causal conversations don't need to be scripted or planned out.

Formal Public Speaking:
The volume of your voice needs to be loud enough for many people to cleary hear you.
Having to publicly speak means you should have a central message in your speech.
Public speaking are usually best to be planned ahead of time so you don't have to improvise.

It could be anything, recent improvements in technology/telecommunication/internet have increased the pace of globalization.generally, it has something to do with technology. globalization means that people around the world are brought together through technology which speeds things up. so maybe some of those options could be correct. : )

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.