Yes, "American wilderness" should be capitalized because it is a proper noun referring to a specific geographic area. However, "wilderness" in general would not be capitalized unless it is the first word in a sentence. So it would be "American wilderness," but "But how about wilderness."
The pioneer blazed a trail through the uncharted wilderness.
No, the finger spelled alphabet does not have capitalized versions of the letters.
Yes, the word "flag" should be capitalized if it is used as part of a proper noun, such as the "American Flag" or "Union Jack," or at the beginning of a sentence. Otherwise, it should not be capitalized.
The settlers charged across the plains, despite the blizzard that threatened them.
A haversack is, essentially, a bag carried on the back. An example sentence would be: His haversack was very heavy.
The bear lived in the wilderness.
wilderness
They enjoyed camping in the wilderness.
She wandered the wilderness for days.The leopard stalked its prey through the wilderness, pouncing with precise timing.
wilderness
The botanical garden has turned into a wilderness.
"With few supplies and limited food, John found the wilderness a bit intimidating."
living in the wilderness is a good place to be to avoid cosmopolitan.
I look forward to our next foray into the wilderness.
Sure. "The explorer explored the wilderness. Unsure if what he'll find."
Forty years (Numbers ch.14)
It defies logic how he could have survived for so long in the wilderness with a broken leg and little food.