Deletion of Ethnic conflicts in western Poland

Comment: as |original research in it's current form.  The extremely brief introduction states that this article concerns "Polish-German relations" (a broader, but more concrete, topic than the actual title), and then gives about one paragraph each to that topic in a variety of different eras.  There are three line citations, which is always a good thing, but the problem here is an underlying assumption that there is a multi-generational link between each era on the topic of ethnicity and ethnic relations.  THAT assumption is not cited at all.  Do I believe that people who have lived in the area of modern day Germany have had encounters with people who lived in the area of modern day Poland?  Of course.  Do I believe that events between those peoples in 1565 have a direct relationship to events between such peoples in 1820?  Maybe, maybe not.  Causality is always a challenge for historians even with the most detailed and extensive research, which is not the case here
Stance: delete
Cited policy: Wikipedia:No original research (WP:OR)