Thoroughly recommend “The Horse, the Wheel and Language”
https://en.wikipedia.org/wiki/The_Horse,_the_Wheel,_and_Language
https://www.amazon.com/Horse-Wheel-Language-Bronze-Age-Eurasian/dp/069114818X/ref=sr_1_1?crid=RR02AZTZL75X&keywords=the+horse+the+wheel+and+language&qid=1678356467&sprefix=the+horse+the+wheel+and+language%2Caps%2C163&sr=8-1
https://ia600907.us.archive.org/27/items/horsewheelandlanguage/horsewheelandlanguage.pdf
And in audiobook:
https://www.audible.co.uk/pd/The-Horse-the-Wheel-and-Language-Audiobook/1977385435?eac_link=XoWZAqMvGEKI&ref=web_search_eac_asin_1&eac_selected_type=asin&eac_selected=1977385435&qid=SifmFY0R34&eac_id=257-2778540-9921352_SifmFY0R34&sr=1-1