I am New to Civ 4 and have been playing about a month. I have progressed to Noble and play random leader on Pangea. The problem is i keep getting wiped out by all and sundry. My usual strategy is to get a religion asap (i often get 2), concentrate my production on warrior(or other unit), worker, settler and expand to 4 or 5 cities not too far from each other and build culture and units. It seems no matter which leader i am or who i have nearby and what reigion they are to me i still get invaded by one or two of them and i am always behind in the tech race, as they seem to have either superior tech or superior numbers or both. In my last game i was the chinese fella and managed to annex a penisula and fill it with 6 cities bordering France and the Aztecs. Louis inveaded early and regularly and although i captured one of his cities and burnt it in the hope it would reduce his production of units, when i had repelled him after our third war i was easy pickings for alexander from the other side of the continent. I started my first frigate as he parked his shiny destroyer off of one of my ports. I must be doing something fundamentally wrong but i do not know what. Help!