<a href="https://en.wikipedia.org/wiki/World_War_II" id="mw5A" rel="mw:WikiLink" title="World War II">World War II</a>: After a one-month <a href="https://en.wikipedia.org/wiki/Siege_of_Warsaw_(1939)" id="mw5Q" rel="mw:WikiLink" title="Siege of Warsaw (1939)">siege</a>, German troops occupy Warsaw.