Frozen Steppe is the 37th province (Stage 4 Province 10) of the Arctic Future, accessible (along with Pimniq) after taking control of Anyu to the west. Taking over Pimniq and Frozen Steppe grants access to The Grotto and Temple Floe.
If previous sectors acquired by negotiation:
Good to have you on my side. Siren can't destroy us both together.
If at least one sector taken by force:
First I will destroy you. Then I will conquer these lands and become the most powerful man in the world!
First I will destroy you, then I will conquer these lands.