Question: How many distinct building campaigns did the Versailles have?
About the article "Palace of Versailles", section "History".

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The earliest mention of the name of Versailles is in a document dated 1038, relating to the village of Versailles.
In 1575, the seigneury of Versailles was bought by Albert de Gondi, a naturalized Florentine, who invited Louis XIII on several hunting trips in the forests surrounding Versailles.
Pleased with the location, Louis ordered the construction of a hunting lodge in 1624.
Eight years later, Louis obtained the seigneury of Versailles from the Gondi family and began to make enlargements to the château.
This structure would become the core of the new palace.
Louis XIII's successor, Louis XIV, had it expanded into one of the largest palaces in the world.
Following the Treaties of Nijmegen in 1678, he began to gradually move the court to Versailles.
The court was officially established there on 6 May 1682.
After the disgrace of Nicolas Fouquet in 1661, Louis confiscated Fouquet's estate and employed the talents of Le Vau, Le Nôtre, and Le Brun, who all had worked on Fouquet's grand château Vaux-le-Vicomte, for his building campaigns at Versailles and elsewhere.
For Versailles, there were four distinct building campaigns.
Louis XIII's successor, Louis XIV, had a great interest in Versailles.
He settled on the royal hunting lodge at Versailles and over the following decades had it expanded into one of the largest palaces in the world (Félibien, 1703; Marie, 1972; Verlet, 1985).
Beginning in 1661, the architect Louis Le Vau, landscape architect André Le Nôtre, and painter-decorator Charles Lebrun began a detailed renovation and expansion of the château.
This was done to fulfill Louis XIV's desire to establish a new centre for the royal court.
Following the Treaties of Nijmegen in 1678, he began to gradually move the court to Versailles.
The court was officially established there on 6 May 1682.
By moving his court and government to Versailles, Louis XIV hoped to extract more control of the government from the nobility, and to distance himself from the population of Paris.
All the power of France emanated from this centre: there were government offices here, as well as the homes of thousands of courtiers, their retinues, and all the attendant functionaries of court (Solnon, 1987).
By requiring that nobles of a certain rank and position spend time each year at Versailles, Louis prevented them from developing their own regional power at the expense of his own and kept them from countering his efforts to centralise the French government in an absolute monarchy (Bluche, 1986, 1991; Bendix, 1978; Solnon, 1987).
The meticulous and strict court etiquette that Louis established, which overwhelmed his heirs with its petty boredom, was epitomised in the elaborate ceremonies and exacting procedures that accompanied his rising in the morning, known as the "Lever", divided into a "petit lever" for the most important and a "grand lever" for the whole court.
Like other French court manners, "étiquette" was quickly imitated in other European courts (Benichou, 1948; Bluche, 1991; Solnon 1987).
The expansion of the château became synonymous with the absolutism of Louis XIV (Bluche, 1986, 1991).
In 1661, following the death of Cardinal Mazarin, chief minister of the government, Louis had declared that he would be his own chief minister.
The idea of establishing the court at Versailles was conceived to ensure that all of his advisors and provincial rulers would be kept close to him.
He feared that they would rise up against him and start a revolt.
He thought that if he kept all of his potential threats near him, they would be powerless.
After the disgrace of Nicolas Fouquet in 1661 – Louis claimed the finance minister would not have been able to build his grand château at Vaux-le-Vicomte without having embezzled from the crown – Louis, after the confiscation of Fouquet’s state, employed the talents of Le Vau, Le Nôtre, and Le Brun, who all had worked on Vaux-le-Vicomte, for his building campaigns at Versailles and elsewhere.
For Versailles, there were four distinct building campaigns (after minor alterations and enlargements had been executed on the château and the gardens in 1662–1663), all of which corresponded to Louis XIV’s wars (Bluche, 1986, 1991; Verlet, 1985). 
With the departure of the king and court from Versailles in 1715 following the death of Louis XIV, the palace and gardens entered an era of uncertainty.
In 1722, Louis XV and the court returned to Versailles.
Seeming to heed his great-grandfather’s admonition not to engage in costly building campaigns, Louis XV did not undertake the costly building campaigns at Versailles that Louis XIV had.
During the reign of Louis XV, the only significant addition to the gardens was the completion of the "Bassin de Neptune" (1738–1741) (Marie 1984; Verlet 1985).
Rather than expend resources on modifying the gardens at Versailles, Louis XV – an avid botanist – directed his efforts at Trianon.
In the area now occupied by the "Hameau de la Reine", Louis XV constructed and maintained "les jardins botaniques" – the botanical gardens.
In 1750, the year in which "les jardins botaniques" were constructed, the "Jardinier-Fleuriste", Claude Richard (1705–1784), assumed administration of the botanical gardens.
In 1761, Louis XV commissioned Ange-Jacques Gabriel to build the Petit Trianon as a residence that would allow him to spend more time near the "jardins botaniques".
It was at the Petit Trianon that Louis XV fell fatally ill with smallpox; on 10 May 1774, the king died at Versailles (Marie, 1984; Thompson, 2006). 
Versailles' municipal building, the Versailles Town Hall and Wayne Township House, is listed on the National Register of Historic Places. 
Louis generously supported the royal court of France and those who worked under him.
He brought the Académie Française under his patronage and became its "Protector".
He allowed Classical French literature to flourish by protecting such writers as Molière, Racine and La Fontaine, whose works remain greatly influential to this day.
Louis also patronised the visual arts by funding and commissioning various artists, such as Charles Le Brun, Pierre Mignard, Antoine Coysevox and Hyacinthe Rigaud, whose works became famous throughout Europe.
In music, composers and musicians such as Jean-Baptiste Lully, Jacques Champion de Chambonnières, and François Couperin thrived.
Over the course of four building campaigns, Louis converted a hunting lodge built by Louis XIII into the spectacular Palace of Versailles.
With the exception of the current Royal Chapel (built near the end of Louis's reign), the palace achieved much of its current appearance after the third building campaign, which was followed by an official move of the royal court to Versailles on 6 May 1682.
Versailles became a dazzling, awe-inspiring setting for state affairs and the reception of foreign dignitaries.
At Versailles, the king alone commanded attention.
Several reasons have been suggested for the creation of the extravagant and stately palace, as well as the relocation of the monarchy's seat.
For example, the memoirist Saint-Simon speculated that Louis viewed Versailles as an isolated power center where treasonous cabals could be more readily discovered and foiled.
Alternatively, there has been speculation that the revolt of the "Fronde" caused Louis to hate Paris, which he abandoned for a country retreat.
However, his sponsorship of many public works in Paris, such as the establishment of a police and street-lighting, lend little credence to this theory.
As a further example of his continued care for the capital, Louis constructed the "Hôtel des Invalides", a military complex and home to this day for officers and soldiers rendered infirm either by injury or old age.
While pharmacology was still quite rudimentary in his day, the "Invalides" pioneered new treatments and set new standards for hospice treatment.
The conclusion of the Treaty of Aix-la-Chapelle in 1668 also induced Louis to demolish the northern walls of Paris in 1670 and replace them with wide tree-lined boulevards.
Louis also renovated and improved the Louvre and other royal residences.
Gian Lorenzo Bernini was originally to plan additions to the Louvre, however his plans would have meant the destruction of much of the existing structure, replacing it with an Italian summer villa in the centre of Paris.
Bernini's plans were eventually shelved in favour of Perrault's elegant colonnade.
With the relocation of the court to Versailles, the Louvre was given over to the arts and the public.
During his visit from Rome, Bernini also executed a renowned portrait bust of the king.