According to one major language theory, how did different groups develop their own languages?
Answer: There are two main theories that explain how different groups developed their own languages. The major one is that humans at some point in time evolved a language acquisition device.
I hope it helps, Regards.
Answer: The kingdom of Aksum lasted for around 905 years.
<span>To lower costs for businesses and consumers</span>
I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
