Canada is Civ 6’s latest arrival, and they’re too nice to declare surprise wars
Canada’s unique ability is Four Faces of Peace. This completely prevents you from declaring surprise wars, or wars against city-states. However, you also can’t be targeted by surprise wars, and you get one diplomatic favour for every 100 tourism. You also get +100% diplomatic favour from successfully completing an emergency or scored competition (like the World Games).
After a year of cruel hegemony over the prestigious ‘most stereotypically perfect unique improvement’ category, Scotland finally has competition: Canada’s improvement is the Ice Hockey Rink. It can only be built in tundra or snow, and only once per city, but provides appeal and amenities, plus culture based on adjacent snow and tundra tiles. The flight tech adds tourism, while the professional sports civic adds production and food. It provides further culture if adjacent to a stadium.
Canada’s unique unit is – of course – the Mountie. It’s a light cavalry unit with the ability to establish a national park, and which gets a combat strength bonus when fighting near national parks (even more so if they’re Canadian-owned).