Why did the Anasazis build roadways 40 feet wide--(when they didn't have any pack animals, nor have knowledge

Question

of the wheel)?

Answer 1

It's a lot of reading but this is what I gathered....

While many scholars believe that the roads integrated Anasazi communities into a large regional network built around reciprocal economic relations, the research reported here suggests that other factors determined where roads were constructed. This research makes heavy use of Geographic Information System (GIS) technology to demonstrate that Chaco Anasazi roads do not follow routes consistent with economic theories of their function, but rather seem to conform with models focusing on religious and integrative road functions.

Answer 2

Roadways, or, perhaps, runways?