How is parliamentary democracy different from presidential democracy?

First, a parliamentary democracy is less likely to encounter gridlock than a presidential democracy is. In a parliamentary system, there cannot be a situation in which the chief executive is from one party while the legislature is (in whole or in part) controlled by a different party. This makes the parliamentary system more efficient.

Explanation:

wait history, who want to talk about history, boring.

it was bribing i think i might be wrong though