Was wyoming part of Dakota Territory?

I think it was Spain Texas was a part of Mexico ---- when it was a part of Mexico! How do you get Spain from that question?

It was a suitable way to divide up the Territory into appropriate state sized parcels. The Dakota Territory would have been too large to effectively govern considering the nature of transportation in...

I believe part of it was, and the other part was acquired from Mexico later.

Both states have a small population.

Wyoming is in the state of Illinois in the United States of America. This is on the North American continent.