This is unknown - the earliest languages we still have record of are ancient Babylonian, ancient Egyptian, Sanskrit and ancient Chinese. However, there were probably as many different early languages as there were early distinct tribes of people, but most of these early languages were lost through assimilation into a national language or through the people dying out.
chinese
Mesopotamia, which means "land between the rivers" is located between the Tigris and Euphrates Rivers.
Bernard Cavanagh has written: 'Esperanto' 'A first foreign language for all mankind: Esperanto' -- subject(s): Esperanto
Contenders for the first written language would be Egyptian, Sumerian, and Chinese. The writing systems for these languages originated at about 5000 BC. Their places of origin are respectively The lower Nile, Mesopotamia, and the Yangs River.
As real as any written language known to mankind.
No monkey was ever on the Moon, so the answer is mankind.
Barley
Grass
Alexis is not a Cherokee name, so has no specific meaning in the language. The name Alexis comes from Greek. It means Protector Of Mankind.
First source of transportation
Universal gravitation.
The first instrument known to mankind, is the human voice.