2. Given in each question are 4 sentences labeled A, B, C and D. Arrange these sentences to form a logically coherent paragraph.
A. The existence of political parties is important for the effective functioning of a democracy.
B. Their origin is not a recent event.
C. They existed even in the republics of the ancient ages.
D. For instance, political parties in England came to be known as Lancastrian and Yorkists, from time to time.