Was President Ford pardoning Nixon of his crimes constitutional?

After Ford left the White House in 1977, he privately justified his pardon of Nixon by carrying in his wallet a portion of the text of Burdick v. United States, a 1915 U.S. Supreme Court decision that stated that a pardon carries an imputation of guilt and that its acceptance carries a confession of guilt.

Explanation:

its c not d   tell me if that´s correct

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.