https://archive.org/search.php?query=creator%3A%22Deutsche+Gesellschaft+f%C3%83%C2%BCr+Christliche+Kunst%22
Multiculture communities are low trust because culture has different communication cues, different visual clothes, different language idioms. Communities that work together are high trust. Assimilation in America means there is a common culture that is chosen, but it takes 3 generations to achieve assimilation, but only when chosen. Maintenance of separate languages, moral principles, outer appearances IS NOT ASSIMILATION and leads to low trust multicultural pockets. These have made America Weak.