Native Americans were removed from the northern tier to western states.

Moscow may be planning to hold the northern tier of Afghanistan, where roads and other public works have been built.

Perhaps he really wanted to make it a viable part of the northern tier of Mexico.

And now the weight of the entire northern tier will be thrown behind the Statex candidate!

Frankly, the northern tier is an area where smugglers are still very active.

The league had better look exciting in a hurry, because spring is not all that far away in the northern tier.

Carp Lake Township is to the north and also to the west of the northern tier.

Middle- and upper-class women generally became more politically active in the northern tier during and after the war.

Great Falls, along with ten other northern tier sparsely populated sites, was considered for a heavy bomber training base.