History of the town of the "Three-colours" flag
In Roman eve (190 before Christ) Marco Emilio Lepido exerted all his authority as a Roman consul. In 77 before Christ Cicerone made for the first time the name of the town of Reggio in Emilia.
During the barbarian dominations Reggio, in land sharing, is the seat of a longobardian duchy.
In the Christian Eve and in Late Middle Age (about on the half of the 4th century after Christ) Valentiniano the 3rd (Emperor) announced the submission of Episcopate of Reggio to the Church of Ravenna.
In 701 the town was proud of having an important monument erected: the Temple of Saint Prospero.
According to an oral tradition the same Carlo Magno in 787 gave the city the chance to found public schools. The election of the first Duchy of Reggio is dated back in 787.
In the 9th century Carlo Magno leads his prisoners from Reggio in France and ther was built up the first Reggiano Hospital. 
After the year 1000 Matilde from Canossa (1046-1125) is the Queen of a state that extended itself from Mantova to LUcca, from Firenze to the Delta of Pò River and it was the protagonist of the battle between the Empire and the Papacy.
Her intercession was important for the Emperor Henry the 4th in order to be forgiven by the Pope in Canossa.
In 1127 the first consul was elected; other offices inside the Commune were those of Captains and Mayors.
The Arrival of Estensis
Ever since about the 1100 Reggio had been marked by conflicts and civil struggles.
In the years 1276-78 diseases and plagues appear because of the bad weather and other causes: the Commune takes safety measures.
In 1281 the walls surrounding the city were ended up. In 1285 a common well was dug and built up in the Cathedral Square.
Since the end of the 13th century the people from Reggio, after many struggles against the neighbour towns submitted to Obizzo d'Este, the Lord of Ferrara.
The 4th of october 1326 the second government ends up and the freedom of the Commune is compromised.
On the 8th of september 1474 was a glorious date for the birth of the citizen and poet Ludovico Ariosto.
In 1527 the plague still persists in Reggio and in one year it let over 7000 citizens die. In 1550 considering the scarceness of foods a census was made: the mouths to be fed were 13070.
In 1556 Cornelio Bentivoglio had wide lands drained thus making a remarkable growth in harvests.
Many representatives of Este family keep succeeding one to another to lead the Town of Reggio. In 1780 2 bridges are built up: the one across the Secchia River in Rubiera and the one of San Pellegrino across the Crostolo river.
The destiny of the Reggian life was changed in 1796 with the COnstitution of Reggian Republic that nevertheless had short duration.
The following year the Napoleonic eve started. The 5th of December was celebrated the Liceo (High) school in Reggio: its President was the King Filippo.
On the 27th of september the first Italian Parliament gathered in Reggio with the deputees from MOdena, Bologna and Ferrara with the same reggiano deputees;on the following day the Cispadana Republic was announced as "one and indivisible". on the 7th of january 1797 the members of the Cispadana Republic declared as "Universal" the flag with the three colours red, white and green that then would become the flag of the united "Italia".
In 1860 the town was annexed to the Italian Reign with 50012 favourable votes and 77 contrary votes.

On the 31st of august 1862 by the decretation no. 814 the King constituted the Chamber of COmmerce in Reggio Emilia.
The conquest of the Commune in Reggio of the election in 1899 and the nomination of the new Mayor were the signal of a changing period that deeply changed the look of the town.
In that period the economic and demographic growth forced the destruction of the ancient walls.
The socialist administration began a series of municipalizations of services (pharmacies, water, electricity), while the labour cooperative gathered as a Consortium in 1904.
After the parenthesis of election defeat in 1904-1907 the socialist Commune pursuited in its policy of innovation both in school domain and the construction one (the building of workers houses) while the industry started to consolidate its presence in the local economy.