Complex sentence: The three-mile long procession that accompanied Lafayette into the city wound through a dozen temporary triumphal archs that had been constructed for the occasion and terminated at Independence Hall where a reception was held in his honor.
Split into simpler sentences: The three-mile long procession that accompanied Lafayette into the city wound through a dozen temporary triumphal archs that had been constructed for the occasion. The parade terminated at Independence Hall where a reception was held in his honor.