There has been a long tradition of Pot smoking in the US, how dirt weed came about is a long story.
It all started when drug laws were passed here in the US that were unreasonable like the government can take your land/home for growing.
Mexico and a few Caribbean nations stepped up it's game and began shipping weed in by the tons.
The reason it was in those little "shit cakes" is because it's usually compacted into 1 pound bricks.
Upon delivery it gets broken up into Ounces or smaller and makes those small brown chunks.
Also people paying for it by weight lead to growers letting it bud too long and develop seeds,
that kills the potency of it but can double the actual weight.
Dirt weed has been declining in popularity here since the 90's but still gets pumped in.
Most of the good weed here is grown locally on the East Coast or brought down from BC up in Canada covering whatever isn't grown out west.
The spike in price for "kind bud" made it economical for people to grow locally again,.
/yespothead