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
The first language spoken and written by mankind is difficult to pinpoint definitively, as it likely evolved over time. However, some believe that Proto-Indo-European may be one of the earliest known languages, originating in the Eurasian Steppe around 4,500 years ago. Written language is believed to have emerged independently in different regions, with Sumerian cuneiform and Egyptian hieroglyphs among the earliest known writing systems around 3,500 BCE.
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.