秦(🈯)王嬴稷(秦(🔨)昭(🆓)王)当政不久(jiǔ ),列国展(zhǎn )开(kāi )一系列兼并战争。秦国(guó )看(kàn )准(🎺)时(🔧)机,先与(yǔ )齐连横,攻略魏国大(🥩)片(piàn )(💤)土(tǔ )地。由此(👋),战国进入秦(qín )齐赵三国(guó )并强(qiáng )阶(🐿)段(duàn )(🕔)。此时,秦(🗄)国国(guó )内宣(🕯)太后掌政,穰(🥄)侯魏(🚉)冉等“四贵(guì )”专权、,秦昭王(wáng )王权旁(páng )落。然而外部局势(shì )(🐖)对(🤷)秦国十分有(🌙)利:纵横家苏秦与燕王秘约赴齐,以灭秦(🎛)为(wéi )目标“死间”齐(📙)国(guó )。面对(duì )国内政治困局和国外有利机遇,秦(🍄)王(wáng )嬴稷毅然起用范雎(jū ),放逐魏冉等“四(🎋)贵”、废(🧟)太(🚴)后之(zhī )(🤖)权而(🕯)恭养之。同(tóng )时(shí )(❕),与苏(💔)秦合(🥊)谋,五(🛎)国联(lián )军在燕(😊)将(jiāng )乐(lè )(➡)毅率(lǜ )领下攻(gōng )破齐国都城临淄。秦王嬴稷遣将白(bái )起(🙎),相继在伊阙、郢都、(⏲)华阳、(👌)长平发动四大战役,歼(🍽)灭了(le )韩魏齐楚赵百