Are the Ucranians a Nation?

i was really driven home by the first chapter of tony juts amazing book, post warrr. The way in which different populations were often forcibly relocated so that they became coterminous with the boundaries and borders of thenation. i think it just as a table setting measure. When we think about like, language a nation, are the ucranians a nation or not? May we just talk a little about the broader context of europe as a set of extremely contested nationalities, peoples, ethnicities, linguistic groups,. for a very long time before the rough borders that get established post forty five get established.