briefly explain how one historical event or development in the period 1787 to 1803 that is not explicitly mentioned in the excerpt would be used to support Ellis's interpretation

One historic event that is not explicitly mentioned in Joseph J. Ellis's text is the purchase of Louisiana.

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In this case, Joseph J. Ellis indirectly shows how President Jefferson's attitude towards the Louisiana purchase was something that should be questioned, as the affront to the constitution was something very dangerous.

The excerpt to which his question refers is shown in the figure below.

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The correct answer to this open question is the following.

Unfortunately, you forgot to include the excerpt to know what you are talking about.

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One historical event in the period 1787 to 1803 that would be used to support Ellis's interpretation is the United States President Thomas Jefferson's historical interpretation about the approval of the Louisiana Purchase.

For historian Joseph J. Ellis, the issue was the way President Thomas Jefferson proceeded to buy the Louisiana territory to the French, knowing that he could have been going beyond his powers as the head of the executive branch. The question for historian Ellis is not that his decision over the territory was right, but the way he implemented that decision that challenged his powers as President. Thomas Jefferson had big hopes that the next step for the American government was in the conquest of the western part of the United States.

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jim crow laws were enacted in northern states.