Is the victory of the North over the South of the USA logical?

We are talking about the civil war in the United States in 1861-1865, the victory of the northerners was natural and obvious, because they had three times more white population, several times more volume of military production at enterprises (the north was industrial, and the south was agricultural, plantation) … The ratio on the railway network was also in favor of the northerners. However, the southerners were able to hold the initiative in the battles for almost two years, until the summer of 1863.