I could care less about resoliving the problems of Islam, apart from bombing them back to Hades where they originated. But here is an authoritative source for the doubters.
Volume 7, Book 62, Number 64: Sahih Bukhari [the most venerated and authentic Islamic source] ~ ~ Narrated 'Aisha: that the Prophet married her when she was six years old and he consummated his marriage when she was nine years old, and then she remained with him for nine years (i.e. till his death).
Volume 8, Book 73, Number 151:
"Narrated 'Aisha: I used to play with the dolls in the presence of the Prophet, and my girl friends also used to play with me. When Allah's Apostle used to enter (my dwelling place) they used to hide themselves, BUT the Prophet would call them to join and play with me. (The playing with the dolls and similar images is forbidden, but it was allowed for 'Aisha at that time, as she was a little girl, not yet reached the age of puberty.) (Fateh-al-Bari page 143, Vol.13)"
Your precious mohammed was nothing but a stinking pedophile
As for how Islam was spread, it was certainly helped by conquest,
What is this, a joke? I don't have time for comedy. In 636 Islamic/Arab armies conquered Syria. Not long after that Persia was conquered, and then the greater part of Egypt fell to the Islamic hordes. From there the wars against Christian Byzantium occurred, and much land was eventually taken from the Eastern Roman Empire Christians. Then the Christian 'Balkans'. NONE of these lands were Islamic prior to the invasions of the terrorist Moslems, but everything they conquered eventually became Islamic. This was due primarily to the uncomfortable life that was thrust upon the vanquished, such as intolerably high taxes, murders and general oppression. Conversion to Islam was the only answer to this tactic used by the barbaric Muslim slime. These animals eventually thrust themselves into France, but were repelled under the leadership of Charles Martel. The 400 + years of occupation of Christian Spain by Islam is, (I hope), general knowledge of the reader.
"but, obviously, they don't kill all Christians and Jews in Muslim lands."
Of course, dead men dont pay taxes. However, over the last 7 years approximately 160,000 Christians PER YEAR have been killed by Muslims, in the Sudan, Rwanda, Somalia, America, the Philippines, Indonesia, and elsewhere.
"Since 1948 and the expulsion of the Arabs from Palestine, relations have gotten much worse, of course."
There is no such place as "Palestine", it has always been Israel, as history so readily records.
"About Mohammed being a "robber". What is your source on this?"
I'm out of time, your questions are not worth another precious moment. Islam is a 'religion' of no hope, no redemption and perpetual misery.