Allentown was formally incorporated as a city on March 12 , 1867 .
Allentown was formally made a city on March 12 1867 .
Allentown was formally made a city on March 12 1867 .
文章をもっと簡単に書き直してください: Allentown was formally incorporated as a city on March 12 , 1867 . 出力: