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…showed last 75 words of 952 total…sounds the same) for the word metal is mettle. What mettle is is your spirit, strength, or courage. This might be pure coincidence but yet has a real tie to the story because the many themes found throughout the play are the characters enduring courage and strength to overcome the hardships at which they faced. So, the title has many relationships to the themes found throughout the play and in my opinion was appropriately titled.