Bi-cameralism are based can be traced back to the theories developed in ancient Sumer and later ancient Greece, ancient India, and Rome, recognizable bicameral institutions first arose in Medieval Europe where it was associated with separate representation of different estates of the realm. For example, one house would represent the aristocracy, and the other would represent the commoners
Bi-cameral Legislature: a governmental body with two houses or chambers, such as the US Congress or British Parliament or Indian Parliament
