When was the first clock created and what did it look like?

pendulum clock

Explanation:

Salisbury Cathedral clock.

Explanation:

Dating from about 1386, is one of the oldest working clocks in the world, and may be the oldest; it still has most of its original parts. The Wells Cathedral clock, built in 1392, is unique in that it still has its original medieval face.

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;