Read the passage carefully then fill in the blank a suitable word.      

       As swimming became a popular recreation in England during the 1860s and 1870s, several (1) ______ sports developed, roughly patterned after land sports. (2) ______ them were water football (or soccer), water rugby, water handball, and water polo, in which players rode on floating barrels, painted to look (3) ______ horses, and struck the ball with a stick.            Water rugby became most popular of these sports, but somehow the water polo name became attached to it, and it's been attached (4) ______ since.            As played in England, the object of the sport was for a player to touch the ball, with both (5) ______, at the goal end of the pool. The goaltender stood on the pool deck, ready to dive on any opponent who was about to score.            Water polo quickly became a very rough sport, filled (6) ______ underwater fights away from the ball, and it wasn't unusual for players to pass out for lack of air.            In 1877, the sport was tamed in Scotland by the addiction of goalposts. The Scots also replaced (7) ______  original small, hard rubber ball with a soccer ball and adopted (8) ______ that prohibited taking the ball under the surface or, "tackling" a player unless he had the ball.            The Scottish game, which emphasized swimming speed, passing, and (9) ______ work, spread to England during the early 1880s, to Hungary in 1889, to Austria and Germany in 1894, to France in 1895, and (10) ______ Belgium in 1900.            Water polo was the first team sport added to the Olympic program, in 1900.

           As swimming became a popular recreation in England during the 1860s and 1870s, several (1) ______ sports developed,