Asslamualaikum... How are you (to the Pemerhati Dunia visitor)? I hope there will be fine, IsnyaAllah. Today, I would like to explain about 'Did Islam Spread by sword? So, to answer this question, I give a verse from Quran. I hope this enought to answer all of the stupid question.
The Muslims did not start any battle with anyone. It was the infidels from the 365 Arab Pagan tribes, and later the Persian and Roman Empires who waged wars against the Muslims. So, yes, since the Muslims were not the aggressors, then this was Jihad; "Fight in the cause of God those who fight you, but do not transgress limits; for God loveth not transgressors. (The Noble Quran, 2:190)"