English

The line graph illustrates the instruction about foreign conferences in three cities central including city A, city B, city C from 1980 to 2010.

To be more specific, we can see the rates of conferences in city C increased dramatically from 0 to 20 in the years 1980, 1990. From 1990 until 2000 had fluctuation, the figure reach a peak of 35 conferences on 2000 and a slight fall to over 30 conferences in 2010. The number of global conferences in city A, city B, were the same with 35 and 30 respectively, fluctuated in the period of 30 years, achieving around 24, 26 conferences respectively in the year 2010.

To conclude, the graph shows that the most enormous growth about the quantity of conferences in city C. By contrast, the figures of city A and B experienced a downward trend, fluctuated trend throughout the period.