4a. The city of Hsinchu, Taiwan has emerged as a global leader in the semiconductor industry. Developing the large semiconductor fabrication plants, specialized research and development workforce, and supply chain for raw materials all required considerable upfront investments but, because of the sheer volume of production (Taiwan now produces over 60% of the world's semiconductors), Hsinchu's per unit production costs for semiconductors are among the lowest in the world and it continues to attract large-scale semiconductor manufacturers. Based on the information above, what centralizing force has significantly influenced Hsinchu? Group of answer choices Economies of Scale Economies of Scope Economies of Agglomeration Positive Locational Externalities