The law of increasing opportunity costs limits international specialization.

The law of increasing opportunity costs states that as production of one good increases, the opportunity cost of producing an additional unit (in terms of other goods that must be foregone) will increase. This means that it becomes less efficient to continue producing more of a particular good, and instead it may be more efficient to switch to producing a different good. This can limit international specialization, as countries may face increasing opportunity costs in producing certain goods and can therefore benefit more from diversifying their production.