Choose a landmark that was built in the last 250 years, such as mount rushmore, the eiffel tower, or the statue of liberty. how does this landmark represent our civilization? just as we study the ruins and landmarks of ancient agrarian societies, what might the people of the future learn from our landmarks?

Past is key to future and landmarks are ket sign and indicators.

Explanation:

Many landmarks have been built in the history of the earth such as the Mount Rushmore, Eiffel Tower, Statue of Liberty and many more the Burj Khalifa, and Berlin wall.  Their basic construct was to put represent civilization like it's in Brazil statue of christ redeemer is know for peace and landmark of Stonehenge on easter island. It depicts a civilization's history and past experiences. landmarks as a way of identifying the place with some characteristics that the place has to offer to the future generation so as they can understand and learn from them. They are marked on the history of the earth's surface.  Some are known for sacrifice, some for rituals, some for freedom and others to represent the amount of power or dominance.

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].