This article needs additional citations for
. (November 2013)
Italian: Boemia) is the westernmost and largest
historical region of the
Czech lands in the present-day
Czech Republic. In a broader meaning, Bohemia sometimes refers to the entire Czech territory, including
 especially in a historical context, such as the
Lands of the Bohemian Crown ruled by
Bohemia was a
Great Moravia, later an independent principality, a
kingdom in the
Holy Roman Empire, and subsequently a part of the
Habsburg Monarchy and the
World War I and the establishment of an
independent Czechoslovak state, Bohemia became a part of
Czechoslovakia. Between 1938 and 1945, border regions with sizeable German-speaking minorities of all three Czech lands were joined to
Nazi Germany as the
The remainder of Czech territory became the
Second Czechoslovak Republic and was subsequently occupied as the
Protectorate of Bohemia and Moravia, In 1969, the Czech lands (including Bohemia) were given autonomy within Czechoslovakia as the
Czech Socialist Republic. In 1990, the name was changed to the
Czech Republic, which become a separate state in 1993 with the
dissolution of Czechoslovakia.
Until 1948, Bohemia was an administrative unit of Czechoslovakia as one of its "lands" ("země").
 Since then, administrative reforms have replaced self-governing lands with a modified system of "regions" ("kraje") which do not follow the borders of the historical Czech lands (or the regions from the 1960 and 2000 reforms).
 However, the three lands are mentioned in the preamble of the
Constitution of the Czech Republic: "We, citizens of the Czech Republic in Bohemia, Moravia and Silesia…"
Bohemia had an area of 52,065 km2 (20,102 sq mi) and today is home to approximately 6.5 million of the Czech Republic's 10.5 million inhabitants. Bohemia was bordered in the south by
Lower Austria (both in
Austria), in the west by
Bavaria and in the north by
Lusatia (all in
Germany), in the northeast by
Poland), and in the east by
Moravia (also part of the Czech Republic). Bohemia's borders were mostly marked by mountain ranges such as the
Bohemian Forest, the
Ore Mountains, and the
Krkonoše, a part of the
Sudetes range; the Bohemian-Moravian border roughly follows the Elbe-Donau watershed.