Answer - The Czech Rebublic
As of January 1, 1993 due to the period of great ethnic tumoil in <span>Czechoslovakian region, it was splited into </span>Slovakia and Czech Republic. After the split, the new Czech republic was faced with <span>the threat of invasion by Slovakia.</span>
The Russian Empire in 1917, the German and the Austro-Hungarian in 1918, and the Ottoman in 1922 were all ended in WW1.
The kind of material would be prone to liquefaction during an earthquake was A. Water-saturated sand
