Hungary disappeared from the surface of the world in one day. August 26, 1526.Hungary was not swallowed up all at once by the Ottomans, it was partly annexed by the Ottoman Empire and the rest went to the Habsburgs.
Poland was swallowed in one week, only 3 years after Victoria time frame. I'm sure that's close enough.Poland was not swallowed up at once, it took 3 partitions, over 20 years and 3 countries to carve up Poland, and even then it was under heavy external influence for years. It was thoroughly occupied a few times (The Deluge, for one), but even then it was not completely annexed.
again.... Poland was swallowed in one week, only 3 years after Victoria time frame. I'm sure that's close enough.All those examples aren't really relevant to the Victoria timeline as well, the Victorian mentality was quite different from the one in the Medieval and even the Enlightenment-era.
There are other countries like Spain, Naples, Holland, etc. annexed by Napoleon and released as vassals later on with Napoleon's own family and friends as their monarchs not too far from Victoria period. There's also other kind of annexations during the Victoria frame, like Texas and Austria but they were political.