The walled BMAC centers decrease sharply in…

The walled BMAC centers decrease sharply in size about 1800 BCE.

Each oasis develops its own types of pottery and other objects.

Also pottery of the Andronovo-Tazabag'yab culture to the north appears widely in the Bactrian and Margian countryside.

Many BMAC strongholds continue to be occupied and Andronovo-Tazabagyab coarse incised pottery occurs within them (along with the previous BMAC pottery) as well as in pastoral camps outside the mudbrick walls.