Politics bonuses

I was bored so i went to read the FAQ, and when i saw the politics part i got a bit confused even though i have seen it 1000 time before, and i hope you can clarify some things: Communatly (or whatever) boost's defense by 300%, what do you mean by that?, are defending troops more powerfull or buildings have more health? (or other)

You also say that it reduces power of units by 300%, i suppose you mean when attacking, because lowering attack when defending would be unfair

Thanks beforehand.

To give more details, that basically means that communality troops receive only one third of damage when defending own town, and inflict only one third of damage when attacking others' towns in comparison with if they were leaderism. These two effects do combine, so a communality player attacking another communality deals nine times less damage, while receiving full retaliation damage from defenders.