The creation of Israel was a violation of many international laws.
Acquiring territory through military aggression
-- Israel acquired territory through legal means according to the laws of the territory at the time. (ie the Mandate we've been discussing. Well, that I've been presenting and you've been ignoring.)
Military attacks on civilians
-- while attacks on civilians ARE a violation of international law -- this does not make the creation of a State which in breach of law a violation of international law and is therefore irrelevant.
Moving your own people onto occupied territory.
-- there was no occupied territory in 1948 when Israel was created. Immigration of Jews to the Jewish national homeland was permitted by international agreement (law). IF this is a violation (and I argue that it is not) it occurred AFTER the creation of Israel and is therefore irrelevant to the question.
Denationalizing citizens due to religion.
-- Israel did no such thing.
. -- I'd argue that Israel's actions were in keeping with normative warfare at the time of her creation. BUT even still this does not make the creation of the State of Israel illegal.
Destruction of private property.
-- again, while this is a violation of international law, -- this does not make the creation of Israel a violation of international law and is therefore irrelevant.
I think there is a confusion in the way you stated your remark. You said, "The creation of Israel was a violation of many international laws." I took this to mean that the act of creating a state (Israel) was illegal.
But I think now, what you meant to say is that Israel (and the government acting on behalf of the Jewish people) committed some acts which were in violation of international law at the time.