What was meant by the "closing" of the Western frontier?

What would serve is strong evidence of universal theme of conflict between children and parents and amy tan’s story to canes

Choose the best paraphrase of bashes haiku an old silent pond a frog jumps into the pond splash silence again a.the pond was silent until the frog jumped in splashing now alternates with quiet b.a pond will never be silent after one frog jumps into it and starts splashing around c. a frog jumps into a quiet pond there is a splash then all is quiet once more d. there was once an accident body of water that a frog splashed into and died

Use any method to combine the following sentences into one sentence. elvis presley died in 1977. his music is still popular today. graceland in memphis was his home.