Kohl led Germany for 16 years (from 1982 to 1998). After receiving a doctorate degree from Heidelberg University, Helmut began his political career as the leader of the Christian Democratic Union party in 1960, Biography reported.
Kohl's later life was also marked by personal tragedy.
The two men also met privately after Kohl stepped down as chancellor in 1998.
The second transformation was the introduction of the Deustche mark into East Germany in July 1990.
During his tenure, he helped the newly-democratised nations of East and Central Europe after the fall of their communist governments and after East Germany went the same way, Kohl moved fast to persuade France, Britain, the USA and then Soviet Union to allow German reunification.
He was born in the year 1930 to Catholic parents and he joined the Hitler Youth in the year 1940 just at the age of ten.
European Commission President Jean-Claude Juncker, who served as Luxembourg's prime minister while Kohl was in office, tweeted: "Helmut's death hurts me deeply". His oldest brother, Walter, was killed in action a few months earlier.
Chancellor Kohl was a friend to the United States during a transformative period for Germany and Europe as a whole.
Former President Bill Clinton (R) hugs former German Chancellor Helmut Kohl (L) after awarding the Medal of Freedom award to Kohl in the East Room of the White House, Washington D.C., April 20, 1999.
Kohl's legacy includes the common euro currency that bound Europe more closely together than ever before.
On Saturday, the daily Tageszeitung's headline was "Blooming Landscapes", an allusion to Kohl's promise of an economically flourishing eastern Germany, over a picture of wreaths.