Embassy

is one of the many structures in Evolution: Battle for Utopia.

The Embassy allows you to get help from your friends, granting bonuses and making you even more formidable.

Embassy can be acquired by purchasing it from "Tactics and Strategy" section. Once researched and built, you will be able to receive and send gifts (75 Crystallite) to your friends on Facebook that play the game. You are restricted to sending a maximum of 10 gifts and receiving 3 per day.

Embassy can be upgraded for 199 gems to receive further benefits (5 clocks per person for speeding up timers) after a linked friend has completed 20 battles. This is limited to 3 per day.

http://evo-wiki.com/buildings/embassy/