Split a vector layer to multiple and merge multiple vector layers into a vector layer in QGIS

This video tutorial will demonstrate following topics in relation to QGIS: a) Download shape file of Nepal b) Select polygons based on attribute variable c) Copy and paste features d) Split vector vector layer into multiple based on a attribute variable e) Merge multiple vector layer into one Link to download shape file : https://download.hermes.com.np/nepal-administrative-boundary-wgs/