Actually, when resources were abundant, I built more than one "city," I don't know if anyone else did it besides me. Perhaps few players play like me, or maybe not at all. I had matches that lasted for hours, sometimes over 3 hours. I found that having many well-defended places like the first "city" also made the AI harder to defeat. Even if you didn't build houses there, at least you had barracks and stables, and they could train soldiers. Because many places only had a single civic center and a market, they were often easily captured quickly, and soldiers had to march a long distance to defend them. And sometimes the AI still wanted to train more soldiers but there was no space because the soldiers blocked all the exits from the buildings. That is, the potential for increasing army size was limited by the number of buildings. Of course, I want long battles, so I find it interesting, because an empire rising from destruction is spectacular to me, and they will have a chance to rise again if there are other "bases" or "cities" with potential. Currently, I have the feeling that the AI is building city-states; it's not large enough for empires yet, but maybe people will find it annoying.

Мы строим качественный каркасные дома санкт петербург быстро, надёжно и по доступной цене. Большинство собственников земель выбирают данную технологию благодаря ее экономичности и функциональности. Владельцы отмечают удобство эксплуатации такого жилья в повседневной жизни. Уровень звукоизоляции в каркасных домах можно повысить за счет лишних слоев. Ряд людей успешно воплощают проект самостоятельно или с небольшой командой.

The fact that when selecting only one player the game automatically declares victory seems almost a bug to me. In that situation, victory conditions implying having an enemy in the first place should not be taken into account.

At the edge of the road decals, could you test how it looks if it's carved out along the gaps instead of blended out?

If these 2 things are different, then it's not good. Besides, it's a bit redundant to have the Tutorial twice. I'd remove it from both places and put it on Single Player > Tutorial, to separate what is playable, in Single Player, from what is readable, in Learn To Play, which could be renamed to Information, Resources, Library, Encyclopedia, whatever.   Or just Continue Campaign, since it also appears in the Main Menu, from where I suggested to be removed because of redundancy.