Which statement best describes the united states changing role in the world during the twentieth century

It went from a great power to an isolationist nation, much like japan. 

e. It became a military superpower in the world but lacked a strong economy.

Explanation:

During the middle of the 20th century, the America became a superpower and the influence of the state grew thought the 20 the century and became isolated power and had a missionary role kin spreading democracy and ensured peace in the western world.  As its geographical area comprised of the fourth largest in the world.

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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].