Presidential vs. Parliamentary

Although both presidential and parliamentary governments are liberal democracies, they have their differences. Both styles of government are implemented into powerful countries (i.e. United States = Presidential; Canada = Parliamentary), and were created to uphold the true essence of liberal democracy. Although both styles are highly successful forms of liberal democracy and have their own advantages and disadvantages, the parliamentary system used by Canada is superior for a variety of reasons but the three main reasons : less prone to corruption, better electoral system, no separation between executive and legislation.
To fully understand the differences between the two styles, one must first understand what liberal democracy really is. To start, Liberalism is when a government is totally invested in the economic, social and political well being of the individual.   Democracy is much more loose in its definition, many brilliant political minds have argued the true definition of democracy but the most accurate definition would be a political system that wants to help the people by making decisions that will benefit the people and the country itself. Combine the two ideologies and you get liberal democracy, an individually motivated form of democracy. Now that liberal democracy has been discussed, we can now look at the differences between parliamentary and presidential systems.  
Arend Lijphart, a famous political scientist from the Netherlands, came up with the three main differences between parliamentary and presidential systems. 1: “In
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parliamentary system, the head of government requires the legislature's continued confidence to stay in power; in presidential systems, the head of government stays in power until his term is up.” 2: “Popular selection vs. selection by legislature. Presidents are popularly elected; parliamentary cabinets are selected by the legislature.” 3: “Collective/collegial executive vs. one-person executive. Presidents tend to...