The answer to this question is 40-60% ; 25%
Other estimation is based not based on the raw intellegence possesed but rather based on whether they could use the intelligence for real life purpose. Studies shows that even though young adults already fully developed the capability for formal operational thinking , onle a quarter of them actually got used to doing it.
Well, the Committee Of Correspondence rebelled against the British laws and policies. The British often used propaganda to get people on their side.
I think that this is the case because Germany is struggling with the legacy of the Second World War, when they caused a lot of suffering, lead to the death of many people and forced many to become refugees. By being more open to refugees I think Germany is trying to compensate for the wrongdoings from the past.