How are the landforms of europe both an advantage and disadvantage to life in europe?

Advantage- Being a huge mass of land createds
Easier transportation among neighbouring countries.
Able to have a more transitional climate allowing more different types of crops to be grown.
More cultural mixture.

Disadvantage- In real danger in times of wars cause surrounded by so many other countries and borders.
Diseases spread easily as there's no physical barrier.
Immigration and influence from other neighbouring countries.

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].