What is the main DIFFERENCE between a presidential democracy and a partiamentary democracy? a

The salient distinction between the two classes of systems is that, in a presidential system, executive power is constitutionally vested in a single individual (i.e., the president), whereas, in a parliamentary system, executive power is vested in the legislature (i.e., parliament, which chooses a prime minister or chancellor to head the executive).

Explanation:

go up to your profile picture in the top right hand. click on it. then click on edit profile. there you shall see delete account