Mot nuoc tien tien nhu Anh+My thi chuyen gi khong the xay ra ...khong gian vung troi rong lon de cac nuoc co cong nghe cao hoat dong ...con tai nang ai gioi thi hon nguoi khac ...cung nhu TQ tung bi cao buot xam vao mang luoi quan su cac nuoc tren the gioi de an cay du thu ma minh chua kha nang lam duoc ...chuyen cua the ky 21 la nhu the ban a...ok