Historical chronology of the Ukraine and Galicia

10th Century with the development of trade routes from Scandinavia to Byzantium the Norsemen residing at the middle Dnepr became known in the East as the "Kievan Rus"
1259 Castle and the village L’viv (later Lemberg) founded by Danylo, appears in the records for the first time.
1340 Lemberg was captured for the first time and in 1349/1350 Galicia was finally conquered by the Polish King Casimir III. Lemberg received town charters based on Magdeburgian law.
1287-1594 Lemberg (L’viv) repelled a dozen attacks by Mongolian, Tartar and Vlach tribes.
1548-1572 During the reign of King Sigismund II, Poland experienced its widest expansion yet, stretching to Kiev and Moscow.
1569 The “Union of Lublin” unified the Lithuanian Grand Duchy with the Kingdom of Poland.
1654 Partition of the Ukrainian part between Poland and the Russian Empire resulted in a brief semi-autonomy of the Ukraine under Russian overlordship.
1683-1699 The Great War against the Turkish Empire. In 1683 Vienna was beleaguered by the Turks and relieved by an army under the supreme command of the Polish King Sobieski. In 1699 the Saxonian King of Poland August II ended the Turkish war with the peace treaty of Karlowitz.
1704 Swedish troops attacked East Galicia and the Swedish King Charles XII conquered L’viv. In 1709 Czar Peter I defeated the Swedes (The Great Northern War)
1721 End of the Great Northern War. Russia became one of the Great Powers of Europe.

How did Galicia come under Austrian sovereignty?

1772 As a consequence of the 1st Polish partition Galicia became part of the Austrian monarchy. Austria laid claim to Galicia because it has previously rested under control of to Hungary and because Maria Theresa was Queen of Hungary.
1775 Turkey assigned the Bukovina to Austria which in turn was amalgamated with Galicia.
1793 2nd Polish partition occurred without Austrian participation.
1795 With the 3rd Partition Poland disappeared (till 1918) as a sovereign state from the maps.

Colonization of Galicia by Germans settlers

1774 in order to establish the administration of the newly obtained areas, Maria Theresa enacted a “Settlement-Patent for Galicia, which however applied only to [Catholic] skilled craftsmen, permitting their migration and settlement only in a select few cities. (German was both the official language and the instructional language in schools)
1781 Settlement-Patent of Joseph II established religious tolerance thus permitting the settlement of protestant peasants.
1782-1785 the “Josephinian Colonization” encompassed about 15,000 immigrants mainly from the Palatinate who were distributed to 165 villages
1802-1805 in the course of the colonization under Franz II 629 families with about 5,000 person immigrated into Galicia
1811-1848 About 400 families from Bohemia and the Egerland came to Galicia and settled in 22 villages in the Carpathians Mountains and their border areas.
1848 Complete liberation of peasants from any obligation of obedience to landlords.
1848 separated from Galicia and became an independent crown land.
1868 Galicia was granted political self administration.

Situation between World War 1 and 2

1914 World War I: L’viv was occupied by Russian troops and reconquered by the Austrian and German armed forces.
1918 End of World War I. Ukrainian armed forces occupied L’viv. After fierce battles, the city was taken by Polish armed forces.
1919 The peace treaty of Paris assigned Poland the right to take East Galicia up to the former Austrian/Russian border under Polish administration.
1921 The peace treaty of Riga determined the borderline between Poland and the Soviet Union.
08/ 23rd "Hitler-Stalin-Pact" set forth the spheres of German and Soviet influence.
09/ 1st   outbreak of World War II
12/ 24th   Relocation of the German population from East Galicia, Volhynia and the Narew area began.
1940 Resettlement of the major part of the Germans in the “Warthegau”, Polish territory annexed to Germany in 1939.
1945 Westward flight of German peoples, after the Soviet army crossed the Vistula River.