This is the 1881st most frequent Polish word.
niemcami
"niemcami" = "Germans" (instrumental plural form in Polish).
In this sentence, 'Niemcami' is used in its instrumental case form to indicate the people with whom the speaker interacted.
Rozmawiałem z Niemcami o różnicach kulturowych.
I talked with the Germans about cultural differences.
Here, 'Niemcami' is in its instrumental case, emphasizing collaboration or companionship with the Germans during the holidays.
Spędziliśmy wakacje razem z Niemcami.
We spent the holidays together with the Germans.
In this instance, 'Niemcami' is the instrumental case form, displaying the entity involved in the conflict.