what branch is made up of the house of representatives?
Congress
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 The division of the legislature into an upper and lower house wasn 't questioned either , despite the obscure origins of the English House of Lords and its role as the representative of the hereditary nobility . Americans had seldom known any but bicameral legislatures , both in Britain and in most state governments . The main exceptions to this were the dysfunctional Confederation Congress and the unicameral Pennsylvania legislature , which was seen as quickly vacillating between partisan extremes after each election . Experience had convinced the delegates that an upper house was necessary to tame the passions of the lower classes against the interests of wealthy merchants and landowners . Since America had no native hereditary aristocracy , the character of this upper house was designed to protect the interests of this wealthy elite , the " minority of the opulent , " against the interests of the lower classes , who constituted the majority of the population . 

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 House of Representatives : Of 475 members , 295 are elected from single seat constituencies under the Single Member Plurality ( " First @-@ past @-@ the @-@ post " ) system , and 180 are elected from eleven separate electoral blocs under the party list system of proportional representation ( PR ) . 

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 Parliament 

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 The most contentious disputes revolved around the composition and election of the Senate , how " proportional representation " was to be defined ( whether to include slaves or other property ) , whether to divide the executive power between three persons or invest the power into a single president , how to elect the president , how long his term was to be and whether he could run for reelection , what offenses should be impeachable , the nature of a fugitive slave clause , whether to allow the abolition of the slave trade , and whether judges should be chosen by the legislature or executive . Most of the time during the Convention was spent on deciding these issues , while the powers of legislature , executive , and judiciary were not heavily disputed . Once the Convention began , the delegates first agreed on the principles of the Convention , then they agreed on Madison 's Virginia Plan and began to modify it . A Committee of Detail assembled during the July 4 recess and produced a rough draft . Most of this rough draft remained in place , and can be found in the final version of the constitution . After the final issues were resolved , the Committee on Style produced the final version , and it was voted on and sent to the states . 

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 The House of Representatives has 435 voting members , each representing a congressional district for a two @-@ year term . House seats are apportioned among the states by population every tenth year . At the 2010 census , seven states had the minimum of one representative , while California , the most populous state , had 53 . 
