One way in which the Watergate scandal created a constitutional crisis
was that it made people question the limits of executive power and
secrecy at the highest levels of government in general.
They could basically have an unlimited amount, as long as they weren't killed. Like the plantation owners, they had to have incredible amounts of slaves to operate their farms.
Everything was part of the colonial economic system: the overseas territories supplied raw materials to the metropolis and these often sold the manufactures they produced under a monopoly regime to their colonies. With the passage of time, these practices were banned in the different countries that carried them out. Or at least officially, since unofficially the slave trade continued well into the nineteenth century, practically until the last colonial territories obtained independence or achieved a more rigorous political status within the State than that of a mere colony.
In the 1920s Americans just got out of WWI and they won so there was a boost in the economy. Also, industrialization and electricity was spreading.
He wanted to have some kind of control over the new president's actions. So he didn't believe he could managed to persued John Adams. He wanted to imposed his own vision of America on the nation. He could influence Thomas Pinckney more. Also there was some badblood between them.