A working horse; one who is trained to pull a plow, costs a minimum of $3,000.00 in the USA today. Also, there’s no such thing as ‘wilderness.’ There’s plenty of uncultivated land, but it’s all owned by the government or private interests who would be averse to you showing up and planting crops.

I suggest you go to the local library and get access to the interwebs, so you can check the facts before you start making silly suggestions.