Why were Germany and Austria-Hungary allies in World War I?

There are
a few reasons why Germany and Austria-Hungary were on the same side in. Germany and
Austria-Hungary had formed an alliance in 1879 known as the Dual Alliance. Germany was very
concerned that Russia might attack them because Germany had blocked the Russian advance in the
Balkans....

href="http://germanhistorydocs.ghi-dc.org/sub_document.cfm?document_id=1856">http://germanhistorydocs.ghi-dc.org/sub_document.cfm?docu...
href="https://www.firstworldwar.com/source/dualalliance.htm">https://www.firstworldwar.com/source/dualalliance.htm