Economics & trade is different amongst all civilizations just as the many different currencies are used today. Countries are ranked in terms of their economic and trade capacity and therefore can subsidize or impose tariffs on certain import/export items. For example, high quality/low quanitity supercomputers or thrust-vectoring planes have an export ban yet the low quality/high quantity HD TVs can be imported without tariffs.
Advanced civilizations and their high quality/low quantity items ought to be traded and be massed produced for less advanced civilizations. Otherwise the priority of the advanced civilization will be focused on the production of low quality/high quanity items in which less advanced civilizations can already mass produce. Less advanced civilizations cannot produce high quality/low quantity goods as of yet but the advanced civilization can make both.
Certain industries of advanced civilizations should be minimalized if they are to be protected from less advanced civilizations. For those industries that are not being protected, they should be maximized.
Advanced civilizations and their high quality/low quantity items ought to be traded and be massed produced for less advanced civilizations. Otherwise the priority of the advanced civilization will be focused on the production of low quality/high quanity items in which less advanced civilizations can already mass produce. Less advanced civilizations cannot produce high quality/low quantity goods as of yet but the advanced civilization can make both.
Certain industries of advanced civilizations should be minimalized if they are to be protected from less advanced civilizations. For those industries that are not being protected, they should be maximized.