Accordingly to one major language theory, how did different groups develop their own languages?

a. by trading tools and goods with other communities

b. by developing words for tools that were unique within their communities

c. by coming up with their own language systems

d. by conquering groups they met and bringing them along as slaves

It is C- coming up with there own language

a.) d-day invasion of normandy.

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the hyksos invasion. the hyksos were able to attack egypt successfully because of their skills in using bronze weapons, composite bows and the use of the horse and chariot during the invasion. although the egyptians depict a barbarian-type overthrow, the truth is the seizure was likely a relatively peaceful one.