They had gathered for quite a while.
Lord Shepherd still spent a large number of Contribution Points to purchase the necessary items, allowing him to attract a large population in such a short amount of time. Otherwise, they would have had to wait another one, two, or three years.
The other conditions? Twenty Superior buildings?
He already had more than a dozen Epic-level Miracle Buildings in his home.
But for the vast majority of Senior City-level Territories, coming up with twenty Superior buildings was definitely a very difficult task.
Superior Miracle Blueprints are precious items that not even Soul Crystals can buy.
As for military exploits, exchange for Contribution Points?
Most Senior Lords could only serve as One-star Frontier Lords, and to earn enough Contribution Points to buy Superior Blueprints would certainly take no small amount of time.