Aksum

[Robbie040]

I play with Aksum and Managed to capture Zafar and Eudeamon.
I was wondering what the mahrib dam I captured does since I'm not able to convert it , does it have negative efects on my people
I also managed to capture Aila how can I insure that I have enough growth to built new troops there so Can reinforce my troops in Jeruzalem and Tyrus

[Turumba]

Welcome!

As far as I know, there are no negative effects on your people. Except that this slot is taken for forever. And you gain at least the fertility and I guess, all the other boni which the dam provides.
For the second question, I'm not sure if I understand you right, but Growth (or the amount of population) has nothing to do with your ability to reinforce your troops. They will reinforce as long as you have enough food in that province. If you talk about getting growth to fill your building slots: Food, Building, low Taxes, maybe a certain edict can help you with that...

[6Bagheera9]

I don't know if you'll get prompted to repair the dam, but that would be the only other downside other than taking up a slot. It massively improves the fertility of Arabia Felix and gives a nationwide bonus to livestock and agriculture wealth. Its a good thing to have, just make sure to fully repair the stupid thing if asked to, it will cost a lot more to fix it if its actually breaks.

[Slaists]

I've played as Aksum for a while and held that dam. As Aksum you do not get the missions to repair the dam. Those get reserved exclusively for Himyar