Why did some southeast asian states rely mostly on trading while others relied on farming

Mostly it depends on geographic location. The states that are close to sea, oceans can benefit a lot by expanding and trading while the ones being far from ports and having a suitable soil for farming benefit from farming.

Along many centuries people depend and built communities based on national resources and their locations.

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the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.