If you do not want to see any warmongering, you will have to go to an easier level. Settler is a good title if you want a large empire. The higher levels above king, you have to stay small or go to war, since the AI have more units to do something with.
The AI will not atack you if they think that you are not worth it. Have you checked the stats? You may have the most pointiest sticks, even if they are on the other side of the world. If you want more gold, then you need TP's, gold producing buildings, and luxuries.
Well, due to some really benevolent ancient ruins, a musketman I had was first promoted to rifleman, and then to infantry, and then to motorized infantry. (Unfortunately, such multiple upgradings of the same unit won't be possible when the upcoming patch has been published.) I sent that unit back to the Old World, where it stuck out a bit at first among my other troops, which were a melange of longbowmen, trebuchets, longswordsmen and musketmen. But then I discovered rifling, and most of my units are riflemen or cannon now -I upgraded old units and built new ones. And soon I'll have discovered Infantry. In the meantime, a rifleman unit in the New World has been promoted to Infantry by som ancient ruins... Heh. Maybe my lonely but very experienced Motorized Infantry discouraged Ramesses. Also, he might have decided that crushing Genghis Khan and Askia (Ashia? Asharia?) was more important than killing little me, who could wait. Now I am quite confident that I couldk repulse an invasion.
I appreciate all the advice, which I have committed to mind, but right now I have tremendous fun settling the New World (which is full of ancient ruins and barbarian camps to plunder) and deciding where to settle next to get hold of more luxuries. And bribing City States none of my AI rivals are aware of, being too busy fighting each other in the Old World.
Of course, Ramesses is a bit cranky because I "assemble troops at his borders". Well, they have to be *somewhere*, and my realm is, as I said, fairly small. But I've pulled back a lot of them to the London area, and that seems to satisfy him for now. As I said in a previous post, his motrized infantry units, which some turns ago encircled my borders on all sides, have now taken off, presumably to exterminate Genghis Khan.