The Three Economic Sectors. According to the three-sector theory, all economic activity can be classified into one of three sectors: the primary sector, the secondary sector and thetertiary sector.
Pacific Ocean
Sharing a common border throughout its northern extent with the United States, Mexico is bounded to the west and south by the Pacific Ocean, to the east by the Gulf of Mexico and the Caribbean Sea, and to the southeast by Guatemala and Belize.
Hope it helps you
North and South Sudan are divided by rich and poor, conflict. The north is that rich Muslim speaking people as for the south, they are poor and devastated by the conflict that’s been going on for alimony a decade.