Solution:The law of the primate city was proposed by Mark Jefferson, an American geographer, in the early 20th century. This concept suggests that in a country or region, one city, known as the primate city, tends to dominate economically, politically, and culturally over other cities. The primate city is significantly larger and more influential than any other urban center in the area, often overshadowing the rest of the urban hierarchy. Jefferson's theory highlights the disproportionate concentration of resources, population, and activities in the primate city compared to other cities within the same region.