A THE ONE

Hello! Here is a part from a proficiency exam.

Could you please have a look at it and tell me why the correct answer is THE in the passage?

26. The history of the World Cup is quite a short one.
27. Football has been played for
28. over a hundred years, but the first World Cup
29. competition was not held until
30. 1930. Uruguay had won the Olympic football
31. final in 1924 and 1928 and wanted to be World Champions for the third time.
32. Four teams entered from Europe, but with little success.
33. It was the first time that professional teams
34. had played for a world title.
35. It wasn’t until four years later that a
36. European team succeeded in winning
37. the first time. The 1934 World Cup was
38. again won by a / the / one home team,
39. which has been the case several times since
40. then. The 1934 final was between two
41. European teams, Czechoslovakia and Italy.