Which statement best describes the line of demarcation? a) a boundary line drawn by pope alexander iv in 1493, later revised in 1494, giving rights to eastward sea routes to asia to portugal and allowing spain to claim “new” lands to the west. b) a boundary line drawn by pope alexander iv in 1493 giving native americans rights to keep their land but allowing european explorers to claim lands in asia and africa. c) a boundary line drawn by pope alexander iv in 1493, later revised 1494, creating north and south america. d) a boundary line drawn by pope alexander iv in 1493 giving spain rights to the western parts if south america while portugal took control of the east.