Edited sentence: However, it should also be noted that "while many of the historical works published by this institute have revealed its overriding political purpose, it has also sponsored a good deal of high-quality research at a time when Polish scholars had few other outlets.Most of the institutes publications during the communist era that refer to Polish-German questions have an anti-German slant based on political considerations.This is due to the Polish communist regimes belief that perpetuating "the idea of eternal German-Polish enmity was key to its own efforts to justify that regime's existence in Polish eyes"