major challenge major challenges major challenges faced major challenges facing major challenges remain major champion major championship major championships major change major changes major changes occurred major changes were made major character major characteristic major characteristics major characters major charles major chemical major chinese major chip major chord major chords major christian major chronic major chunk major church major circulating major cities major cities and towns major cities around the world major cities have major cities in india major cities include major cities of india major city major civil major clash major class major classes major cleaning major client major clients major climate major climatic major clinical major cloud major coal major collection major collector major college major colvin major combat major comeback major commercial major commission major commitment major commodities major commodity major communication major communications major communities major community major companies major company major competition major competitions major competitive major competitor major competitors major complaint major complaints major complication major complications major component major components major computer major concepts major concern major concerns major concert major concerts major concessions major conclusions major conference major conferences major conflict major conflicts major confrontation major consequence major consequences major conservation major consideration major considerations major constituent major constituents major constraint major constraints major construction major construction projects