Athens allowed all citizens to vote, Rome was just republic !
This quote is located in the preamble of the Bill of Rights. This quote means that the sole purpose of the amendments that we call “bill of rights” was to prevent the federal government from <em>“misconstruing or abusing its powers.”</em> to do so, <em>“further declaratory and restrictive clauses”</em> were recommended.
Those clauses are seen in each Amendment, that have restraints on the powers of the federal government. All of them aim to prevent misconduct from the government, for example in Article I, you can see: <em>“Congress shall make no law…”</em>
Answer:
A federal system of government is one in which power is distributed between a central authority and smaller political units such as states. The framers of the Constitution designed a federal system because they thought it would prevent central government from having too much power.