barriers that can limit foreign trade in a business

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any business that engages into foreign exchange that is the transporting of goods in and out of the country might face some barriers which can limit it. one of the major barriers which can limit foreign trade is transportation. wind the means of transportation is on available foreign trade can be limited?how is this possible. when the purchasing of means of transportation such as aeroplane ships train which are made in transporting of this large quantity of goods is all available there will be an impossibility and also difficulty in transporting these goods. and also when the fast means of transportation tend to be on available the businesses have no other choice than using the slow means of transportation such as ships and trains this means of transportation is not that effective in transporting of perishable goods due to its slowness and saw this now serves as a barrier and limit on discourages of foreign trade in a business.
And sometimes government bans can discourage foreign trade. for example if a company lays a ban in exporting and importing of rice this will serve as a challenge for businesses to export and import their goals does foreign trade is been discouraged.
and we all know that anyone who goes against this law in exporting his or her goods outside the country such person can be alleged to have committed an illegal offence which is punishable by law