Which Chief God Will the Queen Choose Tonight?

[Fantasy romance + Mary Sue + born into another life + not based on mythology] I transmigrated. I became Princess Nievei, in a tiny country of around thirty thousand people whose water supply was controlled by a neighboring nation. No problem. My nine years of compulsory education and college weren't for nothing. Reservoirs? Waterwheels? On it! Test fields? Crop rotation? On it! I thought this was a farming and nation-building story. That is, until the neighboring nation invaded and my country was on the brink of ruin. With little hope, I prayed to the gods at a temple for help. A miracle descended. The enemy's weapons melted, and their food and supplies were burned to ashes. Me: ...So the gods really exist? Later on, The King of the Gods baked me cakes. The Moon Goddess became my bodyguard. The God of Metallurgy forged iron for me. The River God brought water to my fields. The Sea God opened up sea routes for me. Each of them looked at me with burning passion. And the way I looked at them: this one can build roads, that one can make steel, this one can manage the accounts... I was half-willingly persuaded to have a few demigod children with them. ...Anyway. Romance? No time. I'm going to unify the world. In a nutshell: I thought I was playing a conquest game, but it turned out all the chief gods on the server had made alt accounts to woo me.