Fast moving volcanic mudflow created through the combination of ash and water is called

Pyroclasts refers to ash, rock fragments and volcanic bombs ejected during volcanic eruption. When pyroclasts mix with super-heated gases ejected during volcanic eruption, this results in pyroclastic flow. Pyroclasts may then mix with water as it flows down the volcano. This gives rise to lahars which is a fast flowing mudflow created through the combination of pyroclasts(ash) and water. Thus, the combination of ash(pyroclasts) and water is called lahars.

NOTE: pyroclasts refers to ash

"the socialist system that had been in place had brought economic ruin to the country." i hope this !

The shia sect of islam is primarily different from sunni islam in the belief that the first legitimate imam following muhammad was imam ali. unlike the three caliphs that succeeded muhammad, ali was part of muhammad's clan (related to him). major shia caliphates include the fatimid and safavid caliphates.  the answer will be option c. shia read more on