50 POINTS PLEASE HELP ITS DUE AT 11:59 and I haven't started it

Oh I see it now, I didn't see it before. (Wifi slow)

Explanation:

1. The global era increased drastically (I think that is how you spell it) probably because we have better improvement.

2.  The semi-nomadic era stayed neutral for a long time.

3. The era of city-states started to figured things out. (I don't know what to put for number 3.)

I think that now that we have the technology, it helps us figure things out and we are way more advanced than we were years (YEARS) ago.

I wonder why the semi-nomadic era didn't increase till many years later because after that it started to increase slowly by a lot.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.