The items are complementary. Complements.
For example, a Tesla car and a Tesla charging point.

Win-win negotiations require a collaborative approach.

Political.
It's a close-run thing with economic, but the reference to 'stability of governing regimes' clinches if for 'political'.

Indemnity.
As in 'an indemnity clause'.
'The supplier hereby indemnifies the buyer against / in the event of...'

All of those shown are barriers to trade.
Quotas place a numerical limit on what may be imported; embargoes ban certain goods (for exam-ple, no goods originating in Israel may be imported); duties discourage imports; subsidies of local industries undercut foreign competitors (have a search for stories on large airlines being subsidised in various countries, commonly for reasons of prestige); complex customs procedures make import-ing foreign goods difficult (great examples involving France); exchange controls limit the amount of a currency which can be converted into another currency, limiting payment possibilities for imports. Etc.
Of course, most countries using any of these mechanisms repeatedly eulogise on the benefits of free trade....