In the United States, the Constitution is the ultimate "law of the land," meaning that the federal government has sovereignty over the states--although some powers are "shared".
The stamp act was the first interal tax levied directly american colonist by the british goverement. The tea act was that the colonist had never accepted the constitionability of the duty of tea, and the tea act rekindled their opposition to it.
It seems that you have missed the necessary options to answer this question, but anyway, here is the answer. As the result of a conflict between British troops and a colonial militia in Massachusetts, the Boston Tea Party took place. The "Boston Massacre" occurred, in which British troops fired on colonists. Hope this helps.
