Lincoln successfully led his country through its greatest constitutional, military and moral crisis – the American Civil War – preserving the Union while ending slavery, and promoting economic and financial modernization.

* 2009 – President of Fiji Ratu Josefa Iloilo announces he will suspend the constitution and assume all governance in the country, creating a constitutional crisis.

An instance of a Governor General exercising his power was during the 1975 Australian constitutional crisis, when the Australian Prime Minister of the time, Gough Whitlam, was dismissed by the Governor-General.

However, in times of constitutional crisis the Administrator can appoint someone else as Chief Minister.

Yet the logic of his argument pointed to the position he would espouse during the constitutional crisis of 1937.

The term started to get its modern negative meaning with Cornelius Sulla's ascension to the dictatorship following Sulla's second civil war, making himself the first Dictator in more than a century ( during which the office was ostensibly abolished ) as well as de facto eliminating the time limit and need of senatorial acclamation, although he avoided a major constitutional crisis by resigning the office after about one year due to poor health, dying shortly after.

Roldós's constitutional successor, Osvaldo Hurtado, immediately faced an economic crisis brought on by the sudden end of the petroleum boom.

Amid the Assembly's preoccupation with constitutional affairs, the financial crisis had continued largely unaddressed, and the deficit had only increased.

Over the course of a year, such disagreements would lead to a constitutional crisis.

The constitutional crisis of 1975 prominently raised the possibility of the Prime Minister and the Governor-General attempting to dismiss each other at the same time.

The Queen chose not to intervene during the 1975 Australian constitutional crisis, in which Governor-General Sir John Kerr dismissed the Labor government of Gough Whitlam, on the basis that it was a matter " clearly placed within the jurisdiction of the Governor-General ".

The most notable use of the reserve powers occurred in November, 1975, in the course of the 1975 Australian constitutional crisis.

The public role adopted by Sir John Kerr was curtailed considerably after the constitutional crisis of 1975 ; Sir William Deane's public statements on political issues produced some hostility towards him ; and some charities disassociated themselves from Peter Hollingworth after the issue of his management of sex abuse cases during his time as Anglican Archbishop of Brisbane became a matter of controversy.

The rise, and later assassination, of the dictator Julius Caesar marked the beginning of a constitutional crisis that would lead to the reorganization of the Republic into the Roman Empire.

On 28 June 2009, in the context of a constitutional crisis, the military, acting on orders of the Supreme Court of Justice, arrested the president, Manuel Zelaya after which they forcibly removed elected President Zelaya from Honduras.

See the article 2009 Honduran constitutional crisis regarding claims regarding legitimacy and illegitimacy of the event, and events preceding and following the removal of Zelaya from Honduras.

Over the course of a year, disagreements like this would result in a constitutional crisis, leading the Revolution to higher levels.

* 2010 – The 2009 Honduran constitutional crisis ends when Porfirio Lobo Sosa becomes the new President of Honduras.

Later that year, in the context of a series of ministerial scandals that were rocking the Whitlam government, Fraser opted to use the Coalition opposition Senate numbers to delay the government's budget bills with the objective of achieving an early election ( see 1975 Australian constitutional crisis ).

* 1962 – Arturo Frondizi, the president of Argentina, is overthrown in a military coup by Argentina's armed forces, ending an 11 and a half day constitutional crisis.

* 1975 – Australian constitutional crisis of 1975: Australian Governor-General Sir John Kerr dismisses the government of Gough Whitlam, appoints Malcolm Fraser as caretaker Prime Minister and announces a general election to be held in early December.

The constitutional crisis initially developed when the newly appointed Attorney General refused to grant permission for the Nevis Island Administration to assert its legal right in the Courts.

* 1975 – The Australian Coalition opposition parties using their senate majority, vote to defer the decision to grant supply of funds for the Whitlam Government's annual budget, sparking the 1975 Australian constitutional crisis.

* During the 1975 constitutional crisis, on 11 November 1975, the governor-general, Sir John Kerr, dismissed the Labor Party's Gough Whitlam as prime minister.

Asquith's Cabinet Reacts to the Lords ' Rejection of the " People's Budget "— a satirical cartoon, 1909 Prime Minister Asquith's government welcomed the Lords ' veto of the " People's Budget "; it moved the country toward a constitutional crisis over the Lords ' legislative powers.

What followed was the Second Republic's short ( 1921 – 1926 ) and turbulent period of constitutional order and parliamentary democracy.

In the ensuing Canadian federal election, 1926, King appealed for public support of the constitutional principle that the Governor General must accept the advice of his ministers, though this principle was at most only customary.

Examples of the use of such powers include the Australian constitutional crisis of 1975 and the Canadian King-Byng Affair in 1926.

The Statute of Westminster 1931 passed by the Imperial Parliament in December 1931, which repealed the Colonial Laws Validity Act and implemented the Balfour Declaration 1926, had a profound impact on the constitutional structure and status of the Union.

* King – Byng Affair, a similar Canadian constitutional crisis in 1926

Word of this reached the British Cabinet, and Buchan was approached, but he was reluctant to take the posting ; Byng had been writing to Buchan about the constitutional dispute that took place in June 1926 and spoke disparagingly of Mackenzie King.

In 1926, the King-Byng affair resulted in a constitutional crisis that permanently affected the relationship of the Governor General of Canada with the Prime Minister of Canada.

Though he thereafter resigned his cabinet post, Massey was still included in the Canadian delegation to the 1926 Imperial Conference, where was drafted the Balfour Declaration that would ultimately lead to vast constitutional changes in the role of the monarch and his viceroys throughout the former empire.

The Governor General's course of action in what came to be colloquially known as the King-Byng Affair remains debated, though the consensus amongst constitutional historians is that Byng's moves were appropriate in the circumstances that came to be in the summer of 1926.

At the 1926 Imperial Conference, King then went on to use Byng and his refusal to follow his prime minister's advice as the impetus for widespread constitutional change throughout the British Commonwealth.

By summer 1926, former politicians, led by conservative José Sánchez Guerra, pressed the king to remove Primo de Rivera and restore constitutional government.

Under Calles's rule in 1926, a constitutional change was passed that allowed for a non-consecutive re-election, and in 1928 Obregón was elected as Calles's successor ; this amendment was later repealed in 1934.

As governor, serving a term from 1926 to 1930, Byrd pushed through constitutional amendments that streamlined the state government and allowed for more efficient use of tax dollars.

The King – Byng Affair was a Canadian constitutional crisis that occurred in 1926, when the Governor General of Canada, the Lord Byng of Vimy, refused a request by his prime minister, William Lyon Mackenzie King, to dissolve parliament and call a general election.

The PNŢ subsequently repealed the 1926 laws preventing Carol from inheriting the Crown, and faced a constitutional crisis after Constantin Sărăţeanu and Patriarch Miron Cristea resigned from the regency in protest.

In 1940, the courts membership was finally increased to its current size of seven members, and a 1926 constitutional amendment provided that the Chief Justice should be selected by the Justices of the Court and should serve for a term of two years.

The Senate Act 1926 modified the original constitutional provisions for the Senate.

In an October 1933 referendum on constitutional reform, what was unsuccessfully attempted since 1926, was approved by 72. 7 percent of the voters.

He founded his school when in 1926, as a result of a 1917 constitutional reform, all private schools, including the Montessori school his children attended, started receiving an equal amount of money per child from the state, to which he objected.

The First Portuguese Republic () spans a complex 16 year period in the history of Portugal, between the end of the period of constitutional monarchy marked by the 5 October 1910 revolution and the 28 May coup d ' état of 1926.