[1] Stoyanov directed the Unification of Bulgaria and Eastern Rumelia in 1885, and was one of the leaders of the People's Liberal Party until the end of his life.

Zahariy Stoyanov was born in the family of the shepherd Stoyan Dalakchiev in the village of Medven close to Sliven.

In 1881 he was a secretary of the Court of Appeal and a forensic examining magistrate in Rousse, and he was an employee of the Office of Justice of Eastern Rumelia in 1882–1885.

Stoyanov headed the Bulgarian Secret Central Revolutionary Committee (BSCRC) which organized the Unification of Bulgaria and Eastern Rumelia in 1885.

Another sphere he worked in were the memoirs and biographies, describing the April Uprising, the lives of Vasil Levski, Hristo Botev, Georgi Benkovski, and other important Bulgarian revolutionary leaders.