According to Islamic beliefs, Allah spoke Arabic.
yes
It acquire the name Islam from Abraham.
Muhammsd s,a.w
Hajarat Mohammad
Of course, he was the founder of the Islamic Empire, before the foundation of the first Islamic state by him, Arabs had not central government, instead there was a tribal system, that is, a lot of tribes and every tribe had a chief man.
Islam was founded by Muhammad.
I think you mean ISLAMIC.
Islamic belief states that Allah is One indivisible Creator.
According to Islamic beliefs, Allah does not speak a specific language as He is considered to be beyond human comprehension and limitations.
Sikhism
According to Islamic beliefs, Jannah is located in the afterlife, often described as a paradise or garden, where righteous believers are rewarded for their good deeds.