Money was invented long before the 1700s. The first "money" was just bartering, trading one thing for another thing. Then metal objects were introduced as money around 5000 B.C. The Lydians were the first to make and use coins, around 700 B.C. Please see the related link below for more information.
We used letters.
The stone age!!
Prehistory
Was it gold or did they just trade things for what they wanted.
Bartering.Trade with Gold & Silver primarily. (still do to this day)
Crawling
Buttons.
bikes
benches
pickaxes
Shoelaces were invented long before people bothered to keep records of such things.
to communicate between two people
Before the refrigerator was invented, people used iceboxes, which were essentially big coolers with a block of ice. Even before that, food was preserved by salting, curing, smoking, drying, and canning.
theyusedwinpower theyusedwinpower
Brief case
wall sockets
Hores and bikes