Commercial Geography notes

Commercial Geography notes is an educational app for students. ##Main Topics of Commercial Geography notes##Differentiate b/w dams and barragesTypes of grass landsHuman Development Index (HDI)Types Of FarmingDry portDEFINITION Of DemographicsThe longest rivers of each continentNames if Indus River tributariesGeneral knowledge of PakistanImportance Of Commercial Geography Thank you :)