De or het mode-imperium?

The correct Dutch article is:

het mode-imperium

Rule Words ending in -um and -ium: usually het. See the rule

How to use mode-imperium

the mode-imperiumhet mode-imperium
this mode-imperiumdit mode-imperium
that mode-imperiumdat mode-imperium
our mode-imperiumons mode-imperium
your mode-imperiumjouw mode-imperium
every mode-imperiumelk mode-imperium
which mode-imperium?welk mode-imperium?
a big mode-imperium / the big mode-imperiumeen groot mode-imperium, het grote mode-imperium