Rubuta ci gaba ga wannan sakin layi - Kennedy ta gaba biyu surori dogara sosai a kan Bairoch ta lissafi na masana'antu, aunawa dukan al'ummai da wani index, inda 100 ne Birtaniya da mutum daya masana'antu kudi a 1900. Ƙasar Ingila ta girma daga 10 a 1750, zuwa 16 a 1800, 25 a 1830, 64 a 1860, 87 a 1880, zuwa 100 a 1900 (shafi na 149). Akasin haka, yawan masana'antu na Faransa ya kasance 9 a 1750, 9 a 1800, 12 a 1830, 20 a 1860, 28 a 1880, da 39 a 1900. An yi amfani da rabon da aka samu na masana'antun masana'antu na duniya (wanda ya fara bayyana a shafi na 149) don kimanta ƙwanƙwasa da ƙarancin iko ga manyan jihohi. China, alal misali, ta fara da kashi 32.8% na masana'antun duniya a 1750 kuma ta fadi bayan Yakin Opium na farko, Yakin Opium na biyu
da Taiping Rebellion zuwa 19.7% na masana'antun duniya a 1860, da kuma 12.5% a 1880 (idan aka kwatanta da 1.9% na Birtaniya a 1750, yana girma zuwa 19.9% a 1860, da 22.9% a 1880).