白勇语法全解2－54

In 1791 Robert Carter III, one of the wealthiest plantation owners in Virginia, stunned his family, friends, and neighbors by filing a deed of emancipation, setting free the more than 500 slaves who were
        legally considered his property.

答案就是A

问题：setting在这里是表伴随，还是与filing构成并列关系？如果是并列关系，为什么前面不加and呢？还是有省略成分？

请NR解答，谢谢！

不是NN,

我觉得意思上看不是与filing并列

那setting后面的这一串起什么作用？表伴随？

意思上讲的话，我觉得是与filing并列，因为这哥们stunned他的邻居，通过filing和setting free