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A notable case of massive heraldic adoption was admission of Lithuanian and Ruthenian nobility into the ranks of szlachta during the early history of the Polish-Lithuanian Commonwealth ( Polish – Lithuanian union s ) under the provisions of the Union of Horodło .
 Polish-Lithuanian Commonwealth
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Polish-Lithuanian Commonwealth