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In page Polo:

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Following spread of the sport across Argentina, the country is often credited as the capital of polo;[1] Even with the global spread of the sport Argentina has remained the largest producer of the highest quality horses and players. The country's fertile farmland around Buenos Aires and its long standing tradition of polo has made Argentina the center of the polo world. Every major polo tournament in the world is filled with players and horses hailing from Argentina.[citation needed]