What democratic ideal in the US Constitution is reflected in the overall trend of the graph?

b. popular sovereignty

Explanation:

The democratic ideal of Popular Sovereignty is one that is rooted at the very core of democracy. It stipulates that the authority that the Government has, is granted and sustained by the people of that nation when they vote for that Government.

In the graph, we see that the President was voted into power by people of the United States and that even though the proportion of the people who did so out of the total population was less in the past, the President was still only the president because the people voted them in. This therefore reflects Popular Sovereignty.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.

it proved indian land claims were unjustified.