1. World Population Map
2. Age Structure
3. New Birth in Five Continents
4. World Population and GDP per Capita
5. World GDP and Birth Rate in Developed and Developing Countries

      In this viusalization, each country or region has it's own pie chart. The location of the pie chart was based on the latitude and longitude of the country/region. The size of the pie chart was based on the country/region population. For the pie charts, there are two slices. The red slices represent the female proportion of the population and the blue slices represent the male proportion of the population. In concusion, this is a scatter plot & pie chart design to visualize a world map which shows the population data of every countries/regions in the world.
      Viewers can hover the mouse over the pie chart slices to get the country name, female/male population, and female/male percentage of the country population. This plot can give people an overview of the world population by country and gender groups.
      Based on this plot, some simple conclusions can be drawn:

• China has the world largest population, India has the second largest population
• The female-to-male ratios for almost every contries are close to 50% to 50%

      The age structure of a population has significant implications for a variety of societal factors, including economic growth rates, labor force participation, educational and healthcare services, and housing markets, to name a few. The population pyramid of worldwide illustrates the age and sex structure of population and may provide insights about political and social stability, as well as economic development. The population is distributed along the horizontal axis, with males shown on the left and females on the right. The male and female populations are broken down into 5-year age groups represented as horizontal bars along the vertical axis, with the youngest age groups at the bottom and the oldest at the top. The shape of the population pyramid gradually evolves over time based on fertility, mortality, and international migration trends.
      Population pyramids can also be used to predict how a population will grow in the future. An ageing population that is not reproducing will eventually face problems such as having enough children to care for the old. Other hypotheses, such as the "Youth Bulge," claim that a large age gap between 16 and 30 years old, especially among men, leads to societal discontent, war, and terrorism. This makes Population Pyramids useful for fields such as Ecology, Sociology and Economics.       According to the five continents 2000-2019 newborn population area map, the annual developing population is ranked 1 for Asia, 2 for Africa, 3 for North America, 4 for Europe, and 5 for Oceania.
      Africa's new population is in a stable growth trend, with the fastest growth rate from 2000 to 2009, adding 700,000 more newborns per year compared to the previous year. 2010-2019, the new population growth rate slows down, adding 400,000 newborns per year compared to last year. As of 2019, Africa has reached 43 million new people per year, making it the state with the most potential for population growth.
      Asia's new population is on a steady trend, thanks to a large population, adding 70 million people per year, making it the most populous state in the world.
      North America's new population has not changed much, fluctuating between 8 million and 8.5 million new people per year.
      Europe's new population is not changing much, fluctuating between 6 million new people per year.
      South America's new population is on a slow downward trend, declining from 7.3 million new people in 2000 to 6.4 million new people in 2019.       According to the world GPD per capita bar chart and population size line trend, it is found that the total world population is in a stable growth trend from 6.4 billion people in 2000 to 8.3 billion people in 2019, with about 100 million people added each year. World GDP per capita was in a high growth trend from 2000 to 2011, but the growth trend came to an abrupt end in 2011, corresponding to the outbreak of sovereign debt crisis in Europe and the U.S. in 2011. From 2011 to 2019, world GDP per capita fluctuates around $8,300.
      A search of the news reveals that some economists predict that the recession triggered by the subprime financial crisis in the U.S. in 2008 will begin to show up in 2011. The sovereign debt crisis in Europe and the U.S. officially broke out in 2011, triggering a four- or five-year-long recession, like the Great Depression of 1929-1933 in the 20th century in the U.S. After 2016, the world GDP per capita resumed its growth trend.
      The economic situation of the world's developed economies has a significant impact on the world GDP per capita indicator. The developed economies have large GDP volumes and close relationships with developing economies. If a recession occurs in developed economies, it will spread to developing countries and thus affect the whole world economy.       This bubble chart shows how each country's total GDP and birth rate changed over time from 2000 to 2020, and the size of the bubbles represents the size of that country's total population relative to other countries in that year. By clicking the "play" button, users can dynamically observe the trend of all indicators over time. And by combining GDP and birth rate, you can explore whether there is a correlation between them. When you mouse over each bubble, you can see information such as total GDP, total population (ten thousand people), birth rate, year, country name, and developed/developing country labels.
      From this graph we can learn that the difference in the value of total GDP in most developing countries is small and largely lower than in developed countries. Most of the countries with high birth rates are developing countries, and developed countries generally have lower birth rates. There are almost no countries with high birth rates and high GDP, and most bubbles are concentrated in low birth rates and low GDP.
      It is worth noting that the total GDP of developing countries is not necessarily less than that of developed countries. China's total GDP, for example, is outstanding and is accompanied by a huge population size.
      The temporal trend shows a decreasing trend in birth rates and a tendency for total GDP to increase in all countries globally.