What is the significance of one party controlling both houses of congress and the white house

One party can pass virtually all bills they want and keep the other party from passing bills.

Congress could prevent a president from creating a bill by disapproving it due to unconstitutional issue or budget issues. If one party control both white house and the Congress that party will have nobody to limit their movements in deciding which bills should be created.

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress

though both had similar roots, they both took these similar bases & formed it into their own way. both the byzantine empire and ancient roman have similar aspects, but each one made it unique. both the byzantine empire and ancient romans had roman influences which affected their culture