The line chart illustrates the population of the Usa,Japan and nigeria countries changed from 1950 to 2050.
Overall,it is clear that the Usa and Nigeria experienced an upward trend,while japan increased slightly at first and then almost declined throught the period.
As can be seen that, the population changes in Usa and Nigeria were almost 200 million and 50 million in 1950,respectively. After that Usa gradually went up to 300 million in 2000.on the other hand Nigeria population increased to almost 150 million in same year.moreover usa slightly increased to more than 400 million in the end of the year.following that Nigeria steadily grew to at the top at 600 million in 2050.
As per remaining data,the population figure for Japan had 100 million in the first year.later it almost same between 1950 and 2050.subsequently which rise to about 150 million in 2000 then again this figure progresively decreased to more than 100 by the end of the period.
