Original:  During the inauguration of the monument in the Alameda (1872), the descendants of Argomedo gave it to President Federico Errzuriz Zaartu, who put  the presidential sash in inaugurating a tradition that continues.
Revised:  During the inauguration of the monument in the Alameda (1872), descendants of Argomedo gave it to President Federico Errzuriz Zaartu, who put the presidential sash in inaugurating a tradition that continues.
Edit intent: fluency