Complex sentence: Makati is the prime business and commercial area and is the headquarters to most of the multinational corporations residing in the Philippines as well as the country's biggest commercial firms and BPO companies.
Split into simpler sentences: Makati is the prime business and commercial area of the Philippines. The Makati Central Business District is the headquarters to most of the multinational corporations residing in the Philippines as well as the country's biggest commercial firms and BPO companies.