CREATE TABLE table_204_140 (id DECIMAL, "round" DECIMAL, "#" DECIMAL, "player" TEXT, "position" TEXT, "nationality" TEXT, "college/junior/club team  ( league ) " TEXT)

from which nationality did the islanders draft the most players ?
SELECT "nationality" FROM table_204_140 GROUP BY "nationality" ORDER BY COUNT("player") DESC LIMIT 1
SELECT "nationality" FROM "table_204_140" GROUP BY "nationality" ORDER BY COUNT("player") DESC NULLS LAST LIMIT 1