The world's human population has significantly increased over the past 200 years. In the early 19th century, the global population was estimated to be around 1 billion. However, due to various factors such as advancements in healthcare, sanitation, and agricultural practices, the population has experienced exponential growth. As of 2021, the global population is estimated to be over 7.9 billion, indicating a nearly eight-fold increase in just two centuries.
