Chapter TwoUS Future Unique TechnologyEnvironment protection technologyUS future environment protection products will be popular to manufacturers and householders to use. Some economists predict developing countries every city in the global 750 is projected to have a larger future technological economy growth. But the diversity of developing countries' economic performance is large. Developing economy cities, such as China, Japan, Hong Kong, Korea cities can grow rapidly by acquiring capital and technological know-how and putting them to use by their rapidly growing urban labor forces. Even, these developing countries cities' rapid technological development can impact to US labor market supply.Due to future rapid technological development to these developing countries, the result will cause developing countries cities, such as Asia China, Hong Kong, India cities economy growth will rapidly. Otherwise, developed western countries cities, such as US, UK, Canada, Australia, Span, Germany etc. countries lie close to the technological frontier have stable urban populations and more limited investment and job creation opportunities. It will influence these developed countries' economic growth is slow than the developing countries. Due to developing Asia countries cities will prefer to invest more technological development to compare to developed countries, such as US, UK, Canada, Australia, Span, Germany etc. countries. Therefore developed countries, such as US, UK, Canada, Australia, Span, Germany etc. countries tend to grow more slowly. It seems developing Asia countries, such as Hong Kong, China, Korea etc. countries urban and central cities economic performance within developing countries will be better than developed countries, such as UK, US urban and central cities within five years.Thus, I suppose that future developed countries, such as US the speed of technological development will be slower to compare developing countries, such as Hong Kong, China, Korea, India etc. countries. Then, it will bring this question: How to solve developed countries, such as US, Washington, New York etc. cities future economic slow growth challenge? For future developed country cities, such as New York, Washington etc. large cities' technological investment and location decision, it will need understand that diversity is essential. Various factors can have an impact on US country intra-national urban cities performance, including sector structures, agglomeration benefits, infrastructure quality. For example, US country central government needs have tolerance of diverse performance, land supply and US city governance plan. It aims to raise US central and urban cities' future economic performance. Moreover, US country will need to concern above issues to arrange how to improve central and urban city economic development . Specially, it will need to concern technology innovation to encourage many overseas technology investors to anticipate different kinds of technology products innovation, e.g. human intelligence machine, mobile, computer etc. high technology products. It aims to absorb different countries' new technological knowledge of different kinds of high technological products to excite US domestic or foreign countries consumers' desires to choose to buy many different kinds of high technological products to raise US GDP growth in US technological product sector industry in the future.Agricultural development technologySome economists indicate that there are five trends reshape to impact rural America' future economy. They include that digital economy will shift future America rural economy. US quality of life will change a lot, the US rural economy will stay uneven, US commodities will compete in global markets and will give less benefit to US rural economy and US new products will revolutionize US agriculture economy.

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