Henry clay author of the missouri compromise displayed his negotiation skills in which other instance

He displayed his negotiation skills in The nullification crisis Precipitated by South Carolina.
Back then, Clay want a high tariff to be imposed while Calhounnd wants the lower tariff So Clay negotiated  the Compromise Tariff of 1833, in which both of them agree that they will imposed higher tariff in the beginning and will gradually lower it over the years.

C. the delegated powers