Okuma, who changed the Ministry of Finance to an important government office by merging with the Ministry of the Treasury, was a fundamental contributor to reforms such as the Reformed systems of land and tax, and promoted the policy for local production industry.
民部省を吸収合併させて大蔵省を一大官庁とした大隈は地租改正などの改革に当たるとともに、殖産興業政策を推進した。