Protestant expulsion
On October 31, 1731, the 214th anniversary of Martin Luther's nailing of his 95 Theses to the Wittenberg School door, Roman Catholic Archbishop Count Leopold Anton von Firmian signed his Edict of Expulsion (not to be confused with many similar edicts of expulsion issued against the Jews in various cities in Europe), the Emigrationspatent, declaring that all Protestants recant their non-Catholic beliefs or be banished.
Archbishop von Swires declared that it was to be read publicly November 11, 1731, the 248th anniversary of Luther's baptism. Believing that his edict would drive away a few hundred troublesome infidels in the hills around the town, Firmian was surprised when 21,475 citizens professed on a public list their Protestant beliefs.
Landowners were given two days to sell their lands and leave. Cattle, sheep, furniture and land all had to be dumped on the market, and the Salzburgers received little money from the well-to-do Catholic allies of Von Firmian. Von Firmian himself confiscated much of their land for his own family, and ordered all Protestant books and Bibles burned. Many children aged 12 and under were seized to be raised as Roman Catholics. Yet those who owned land benefited from one key advantage: the three-month deadline delayed their departure until after the worst of winter.
Non-owner farmers, tradesmen, laborers and miners were given only eight days to sell what they could and leave. The first refugees marched north in desperately cold temperatures and snow storms, seeking shelter in the few cities of Germany controlled by Protestant princes, while their children walked or rode on wooden wagons loaded with baggage.
As they went, the exiles' savings were quickly drained as they were set upon by highwaymen, who seized taxes, tolls and payment for protection by soldiers from robbers.
The story of their plight spread quickly as their columns marched north. Goethe wrote the poem Hermann and Dorothea about the Salzburg exiles' march. Protestants and even some Catholics were horrified at the cruelty of their expulsion in winter, and the courage they had shown by not renouncing their faith. Slowly at first, they came upon towns that welcomed them and offered them aid. But there was no place where so many refugees could settle.
Finally, in 1732 King Frederick William I of Prussia accepted 12,000 Salzburger Protestant emigrants, who settled in areas of East Prussia that had been devastated by the plague twenty years before.[1] Other smaller groups made their way to Debrecen and the Banat regions of the Kingdom of Hungary, to what is now Slovakia, to areas near Berlin and Hanover in Germany, and to the Netherlands.
On March 12, 1734, a small group of about sixty exiles from Salzburg who had traveled to London arrived in the British American colony of Georgia seeking religious freedom. Later in that year, they were joined by a second group, and, by 1741, a total of approximately 150 of the Salzburg exiles had founded the town of Ebenezer on the Savannah River.
In 1772-1803, under archbishop Hieronymus Graf von Colloredo, Salzburg was a centre of late Illuminism. In 1803, the archbishopric was secularized by Emperor Napoleon and handed over to Ferdinand III of Tuscany, former Grand Duke of Tuscany, as the Electorate of Salzburg. Two years later it was annexed to the Austrian Empire together with Berchtesgaden. However, in 1809 it was transferred to the Kingdom of Bavaria after Austria's defeat at Wagram. At the Congress of Vienna in 1815, it was definitively returned to Austria, but without Berchtesgaden, which passed to Bavaria. In 1850 Salzburg became the capital of the Duchy of Salzburg, a crownland of the Austrian Empire. The city became part of Austria-Hungary in 1866.

20th century
With the fall of the House of Habsburg resulting from World War I, Salzburg became part of German Austria in 1918 and the First Austrian Republic in 1919. In 1921, in an unofficial poll, 99% of citizens voted for annexation to the German Reich.  On March 13, 1938, during the Anschluss, German troops occupied Salzburg; political opponents and Jewish citizens were subsequently arrested, and the synagogue was destroyed. Several POW camps for prisoners from the Soviet Union and other nations were organized in the area.
During World War II, the KZ Salzburg-Maxglan concentration camp was located here. It was a Roma camp and provided slave labour to local industry. Allied bombing destroyed 7,600 houses and killed 550 inhabitants. Although the town's bridges and the dome of the cathedral were demolished, much of its Baroque architecture remained intact. As a result, it is one of the few remaining examples of a town of its style. American troops entered Salzburg on May 5, 1945.
In the city of Salzburg there were several DP Camps following World War II. Among these were Riedenburg, Camp Herzl (Franz-Josefs-Kaserne), Camp Mülln, Bet Bialik, Bet Trumpeldor, and New Palestine. Salzburg was the centre of the American-occupied area in Austria.

21st century
As of 2006, Salzburg's Jewish community consists of little more than 100 people. The synagogue at Lasserstraße 8 is still the religious centre. On January 27, 2006, the 250th anniversary of the birth of Wolfgang Mozart, all 35 churches of Salzburg rang their bells a little after 8PM (local time) to celebrate the occasion. Major celebrations took place throughout the year.