Which material changes were brought to Egypt through interactions (both peaceful and nonpeaceful) with nomadic peoples?

Improved Bronze working and a vertical loom for making cloths.              

Explanation:

It's known that Hyksos after invading Egypt in 1640 B, C.introduced bronze. Bronze used in making farming tools and weapons. Hyksos introduced new methods of making bronze and casting it into various tools and weapons.

A vertical loom for making cloths introduced from Syria. In the New Kingdom, depictions on the wall shows loom with weaver indicated the presence of it in the empire. The introducing of the loom in Egypt happen when Thutmose III brings Syrian war prisoners to work in the workshop.

what are local authorities doing to fix the problem

explanation:

companies passed on production and transportation costs to consumers