[mamelukesabre]

mountainous Peruvian terrain didn’t lend itself to the use of wheeled carts
~~~~~~~~~~~~~~~

ok, and what about the rest of the hemisphere?

[SoCal Pubbie]

I said I didn’t buy it! Another factor given is that there were few pack animals available, though South American tribes has llamas. A wheelbarrow type device or small cart still seems useful to even plains Indians. Who knows?