Because it takes away more objective voices who are also "Subject Matter" experts, and replaces them with partisan ideologues.
The political advisors are not subject to confirmation by Congress.
Separation of powers and the system of checks and balances
Feudalism.
The charter took away some of the Puritans political privileges
the progressive reform movement
Robert Crittenden's lifelong attempts to support and control and then oppose political candidates greatly weakened his influence and ended his political career.
it caused the national unity to become more difficult
Railroads diverted trade from the Mississippi artery to an eastward direction.
One of the biggest political blunders of Theodore Roosevelt's career was his decision to run for a third term as President in 1912. This split the Republican Party and ultimately led to the election of Democrat Woodrow Wilson. Roosevelt's decision to run as a third-party candidate weakened the chances of the Republican nominee, and it demonstrated a disregard for the traditional two-term limit that had been followed by previous Presidents, making it a significant blunder in his political career.
there are more independent voters and people are now more educated to the corrupt nature of parties
No, "weakened" is not an adverb.The word "weakened" is a verb.
The South had basically the Democratic Party with which to bring their issues to the Federal government. The problem was that in the 1860 presidential election, the Democratic Party was present in both the North and the South, but a disunited party. This fact weakened the impact of the Democrats.
Political struggles and social problems weakened the Han Dynasty. It fell in A.D. 220. China had no single ruler.