The Berlin wall was built in 1961, it was considered the symbol of the Iron Curtain, the European border line between the areas controlled by France, the United Kingdom and U.S.A together and the Soviet Union, during the cold war.
For 28 years it has been a condemnation for Germany and its citizens; the Berlin wall caused a lot deaths but luckily in 1989 it was struck down. History teaches us to learn from our mistakes but some men never learn from tragedies; infact in 2017 during the USA elections the future president Trump proposed to build a wall between Mexico and the United States o stop drugs traffic and illegal immigration. This could follow in the footsteps of the Berlin Wall causing poverty and many deaths.
Again. Why do we study history for?