Why has china had recent success expanding production and increasing economic growth
a) china was a developed country in the past
b) china's totalitarian government dictates what people must do.
c) china has excellent infrastructure
d) china has excellent relationships with the developing world

I got this one wrong. Luckily the quiz told me which was right. Here I took a snip.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

Can you show the map?