Your wrong, from the beginning there was the house of war 'Dar al Harb' and 'Dar al Islaam'. Don't know if it came from Abu Hanifa, but I do know he lived 500 years earlier. I think you are confused with the age of humanism where there was discussion on changing it to 'Dar al Salaam' and 'Dar al Kaffir'
Not Dar al-Islam, dar al-Salaam. Although the root of both Islam and Salam are the same, the meaning is somewhat more elusive. And it did not come from Abu Hanifa, but from Ibn Taymiyyah, who did indeed live in the thirteenth century.

The concepts existed, certainly, but what did and did not constitute dar al-Islam and dar al-Harb wasn't made clear until the thirteenth century, when it (apparently) became vital for Muslim states to survive. Interestingly, this can be correlated with the end of the Islamic Golden Age.

Seeing how the principles of dar al-Islam and dar al-Harb weren't built during Muhammad's lifetime, but rather during a time of political turmoil is very important when it comes to the designation of the West in the eyes of the Islamic world.