<P> Seven Indian States, Andhra Pradesh, Telangana, Bihar, Jammu - Kashmir, Karnataka, Maharashtra and Uttar Pradesh, have bicameral Legislatures, these are called legislative councils (Vidhan Parishad), one third of whom are elected every two years, there are graduate constituencies (members elected exclusively by graduates), teachers constituencies (members elected exclusively by teachers), municipal constituencies (members elected exclusively by Mayors and council members of the city Governments). From 1956 to 1958 the Andhra Pradesh Legislature was unicameral . In 1958, when the Legislative Council was formed, it became bicameral until 1 June 1985 when it was abolished . This continued until March 2007 when the Legislative Council was reestablished and elections were held for its seats . Since then the Andhra Pradesh Legislature has become once again bicameral . In Tamil Nadu, a resolution was passed on 14 May 1986 and the Legislative Council was dissolved on 1 Nov 1986 . Again on 12 April 2010, a resolution was passed to bring it back bicameral, but became unsuccessful in 2011 . </P> <P> Under Soviet regime regional and local Soviets were unicameral . After the adoption of 1993 Russian Constitution bicameralism was introduced in some regions . Bicameral regional legislatures are still technically allowed by federal law but this clause is dormant now . The last region to switch from bicameralism to unicameralism was Sverdlovsk Oblast in 2012 . </P> <P> During the 1930s, the Legislature of the State of Nebraska was reduced from bicameral to unicameral with the 43 members that once comprised that state's Senate . One of the arguments used to sell the idea at the time to Nebraska voters was that by adopting a unicameral system, the perceived evils of the "conference committee" process would be eliminated . </P> <P> A conference committee is appointed when the two chambers cannot agree on the same wording of a proposal, and consists of a small number of legislators from each chamber . This tends to place much power in the hands of only a small number of legislators . Whatever legislation, if any, the conference committee finalizes must then be approved in an unamendable "take - it - or - leave - it" manner by both chambers . </P>

What were the two main reasons for creating a lawmaking body of two houses