Using government regulations to limit the import of goods and services is called:

Trade protectionism. Trade protectionism is how countries raise tariffs and reduce imports to protect their domestic industries. Trade protection is the deliberate attempt to limit imports by putting up barriers to trade. Despite the arguments in favor of free trade and increasing trade openness, protectionism is still widely practiced.In economics, protectionism is the economic policy of restraining trade between states (countries) through methods such as tariffs on imported goods, restrictive quotas, and a variety of other government regulations.

In line with other previous and contemporaneous proposals, in 1912 the meteorologist  alfred wegener  amply described what he called continental drift, expanded in his 1915 book the origin of continents and oceans and the scientific debate started that would end up fifty years later in the theory of plate tectonics.

Answer continue to produce a quantity such that marginal revenue equals marginal cost;