Gather information about the setup of fortified city of Baghdad (80-90) words I need it please answer it

I will give you brainiest please help me

The explorer marco polo who visited china was from barcelona luxembourg rome venice

Were the terms of the treaty of versailles reasonable?

Can someone answer these question about vasco de gama for me: when? (when did he started his travel)from where & to where? (from where he was and then where he went to)motives? (what was his motives for traveling)accomplishments & discoveries? i will give you 15 star for answering all of these, you so much.