Looking at the screenshot with Saint-Petersburg and a trade route to it, these lines from The Bronze Horseman by Alexander Pushkin came to mind.
Отсель грозить мы будем шведу,
Здесь будет город заложён
На зло надменному соседу.
Природой здесь нам суждено
В Европу прорубить окно,
Ногою твёрдой стать при море.
Сюда по новым им волнам
Все флаги в гости будут к нам,
И запируем на просторе.
May be a nice text for the decision/event to found Saint-Petersburg."From here, indeed
Shall we strike terror in the Swede;
And here a city by our labor
Founded, shall gall our haughty neighbor;
'Here cut'--so Nature gives command--
'Your window through on Europe; stand
Firm-footed by the sea, unchanging!'
Ay, ships of every flag shall come
By waters they had never swum,
And we shall revel, freely ranging."