Global map, yes
World chat, no
At least now you can gift your alliance with resources, which indirectly benefits the other players.
CM Popeye said:
World map and Global chat were not put in for performance reasons. Both would cause the game to slow down due to the extreme load placed on the servers. Resource exchange / gifting is something that will be implemented in the future, but I can't give out any timeline atm. -Popeye