Incorrect.

Trade can happen with any two or more people who have different things (and the things need not even be physical).

Stable markets, on the other hand, require a stable government of some sort to maintain them. And that's what you really need for the economic side of what we would think of as civilization.

Correct.

Trade cannot happen without the threat of violent attack against those who would otherwise freely use particular land or possessions, aka rules, aka law enforcement, aka government.

And your evidence to support this crazy assertion?

Also, what's your basis for claiming that "government" is the only way to protect people/possessions from violent attack?

If one was not violently prevented from using land or objects, why would one "trade" for their use, when they could freely use them already?