Question: When did the majority party in the body which determines the rules of the US House and US Senate gain control of the House?

Knowledge 1: Standing Rules of the United States Senate
The Standing Rules of the Senate are the parliamentary procedures adopted by the United States Senate that govern its procedure. The Senate's power to establish rules derives from Article One, Section 5 of the United States Constitution: ``Each House may determine the rules of its proceedings... '' [SEP] Knowledge 2: 110th United States Congress
The Democratic Party controlled a majority in both chambers for the first time since the end of the 103rd Congress in 1995. Although the Democrats held fewer than 50 Senate seats, they had an operational majority because the two independent senators caucused with the Democrats for organizational purposes. No Democratic - held seats had fallen to the Republican Party in the 2006 elections. Democrat Nancy Pelosi became the first woman Speaker of the House. The House also received the first Muslim (Keith Ellison) and Buddhist (Hank Johnson and Mazie Hirono) members of Congress. [SEP] Knowledge 3: Party leaders of the United States House of Representatives
Starting with Republican Nicholas Longworth in 1925, and continued through the Democrats' control of the House from 1931 to 1995, save for Republican majorities in 1947–49 and 1953–55, all majority leaders have directly ascended to the Speakership brought upon by the retirement of the incumbent. The only exceptions during this period were Charles A. Halleck who became Republican House leader and Minority Leader from 1959 to 1965, Hale Boggs who died in a plane crash, and Dick Gephardt who became the Democrats' House leader but as Minority Leader since his party lost control in the 1994 midterm elections. Since 1995, the only Majority Leader to become Speaker is John Boehner, though indirectly as his party lost control in the 2006 midterms elections. He subsequently served as Republican House leader and Minority Leader from 2007 to 2011 and then was elected Speaker when the House reconvened in 2011. In 1998, with Speaker Newt Gingrich announcing his resignation, both Majority Leader Dick Armey and Majority Whip Tom DeLay did not contest the Speakership which eventually went to Chief Deputy Whip Dennis Hastert.
Knowledge 1: Standing Rules of the United States Senate
The Standing Rules of the Senate are the parliamentary procedures adopted by the United States Senate that govern its procedure. The Senate's power to establish rules derives from Article One, Section 5 of the United States Constitution: ``Each House may determine the rules of its proceedings... '' [SEP] Knowledge 2: 110th United States Congress
The Democratic Party controlled a majority in both chambers for the first time since the end of the 103rd Congress in 1995. Although the Democrats held fewer than 50 Senate seats, they had an operational majority because the two independent senators caucused with the Democrats for organizational purposes. No Democratic - held seats had fallen to the Republican Party in the 2006 elections. Democrat Nancy Pelosi became the first woman Speaker of the House. The House also received the first Muslim (Keith Ellison) and Buddhist (Hank Johnson and Mazie Hirono) members of Congress. [SEP] Knowledge 3: Party leaders of the United States House of Representatives
The current Minority Leader Nancy Pelosi, of the United States House of Representatives serves as floor leader of the opposition party, and is the counterpart to the Majority Leader. Unlike the Majority Leader, the Minority Leader is on the ballot for Speaker of the House during the convening of the Congress. If the Minority Leader's party takes control of the House, and the party officers are all re-elected to their seats, the Minority Leader is usually the party's top choice for Speaker for the next Congress, while the Minority Whip is typically in line to become Majority Leader. The Minority Leader usually meets with the Majority Leader and the Speaker to discuss agreements on controversial issues.
Knowledge 1: Standing Rules of the United States Senate
The Standing Rules of the Senate are the parliamentary procedures adopted by the United States Senate that govern its procedure. The Senate's power to establish rules derives from Article One, Section 5 of the United States Constitution: ``Each House may determine the rules of its proceedings... '' [SEP] Knowledge 2: Party leaders of the United States House of Representatives
Starting with Republican Nicholas Longworth in 1925, and continued through the Democrats' control of the House from 1931 to 1995, save for Republican majorities in 1947–49 and 1953–55, all majority leaders have directly ascended to the Speakership brought upon by the retirement of the incumbent. The only exceptions during this period were Charles A. Halleck who became Republican House leader and Minority Leader from 1959 to 1965, Hale Boggs who died in a plane crash, and Dick Gephardt who became the Democrats' House leader but as Minority Leader since his party lost control in the 1994 midterm elections. Since 1995, the only Majority Leader to become Speaker is John Boehner, though indirectly as his party lost control in the 2006 midterms elections. He subsequently served as Republican House leader and Minority Leader from 2007 to 2011 and then was elected Speaker when the House reconvened in 2011. In 1998, with Speaker Newt Gingrich announcing his resignation, both Majority Leader Dick Armey and Majority Whip Tom DeLay did not contest the Speakership which eventually went to Chief Deputy Whip Dennis Hastert. [SEP] Knowledge 3: Party leaders of the United States Senate
The Senate is currently composed of 51 Republicans, 47 Democrats, and 2 independents, both of whom caucus with the Democrats.

Answer: the 2010 election