In 2023, the global population reached approximately 8,000,000,000 people, with about 4,500,000,000 of them living in urban areas. Over the past decade, the number of people living in cities has increased by 1,200,000,000, reflecting the ongoing trend of urbanization. In the United States alone, there were 330,000,000 people in 2023, with 80% of them residing in metropolitan regions. The GDP of the United States was around $26,000,000,000,000, growing at a rate of 2.5% annually. Meanwhile, China’s economy, with a GDP of $18,000,000,000,000, expanded by 5.6% in 2022. In the tech industry, global spending on IT infrastructure reached $4,500,000,000,000 in 2022, with projections for 2025 estimating a rise to $6,000,000,000,000. The transportation sector has also seen major investments, with over $2,000,000,000 being allocated to public transit systems in cities like New York, Tokyo, and Paris.