$-[]$ Introduction$-[]$ Definition and Importance of Contract Law$-[]$ Definition on what is an Offer$-[]$ Component of an Effective and Valid Offer$-[]$ Case Analysis: Landmark Cases on Offers$-[]$ Case $1$: Carlill V Carbolic Smoke Ball Co $(1893)-$ offer made to World at Large $-[]$ Case $2$: Pharmaceutical Society of Great Britain V Boots Cash Chemist $(1953)-$ invitation to treat $-[]$ Case $3$: Gibson V Manchester City Council $-$ clear, definitive language $-[]$ Case $4$: Balfour V Balfour $(1919)-[]$ Case $5$: Hyde V Wrench $(1840)-[]$ Uncertainty in Offer Terms$-[]$ Impact of Unclear Terms on Offer Validity$-[]$ Case Analysis: Unclear Offer Terms$-[]$ Case $1$: Scammel and Nephew Ltd V Ouston $(1941)-$ parties never contracted $-[]$ Case $2$: Hilas & Co Ltd V Acros Ltd $(1932)-$ fair specification. $-[]$ Case $3$: Nicolene Ltd V Simmond $(1953)--[]$ Conclusion