What do you think really happened with Gilbert, the Teutonic Knights, and Ancient Prussia?

Ancient Prussia was conquered by the Teutonic Knights back around the early 1000's or late 900's. Poland, Germanic countries, and some other countries wan't to take over the land and they told the Teutonic Knights to. After the take over most of the original people were killed or forced into another countries culture and inevitably forgot theirs'. Ancient Prussia (Also known as Pruzzi or Prusa by the natvie people) was a baltic country to her sister countries Ancient Latvia and Ancient Lithuania. Although Ancient Lithuania tried helping the early Prussians in their war against these other nations, and it worked for a while, the Prussians ended up losing and the Germanic Prussia is said to be named after the Ancient Prussia in a type of memorial way. Isn't it odd how every country that Gilbert could have been or was ended up being dissolved or taken over?