Which controversial president ruled for over three decades from 1876 to 1911, modernising the country with railways and industry but creating vast inequality that sparked the revolution?

• A Antonio Lopez de Santa Anna
• B Porfirio Diaz ✓
• C Victoriano Huerta
• D Manuel Gonzalez

Porfirio Diaz's long dictatorship, known as the Porfiriato, attracted foreign investment and built infrastructure but concentrated land in a few hands, triggering the 1910 uprising.