"Why then did Palestinian leaders rejected 'two-state' solutions when it was offered"

Because you're peddling "alternate facts", or lies as most people call them.

All Israel has ever come to the table with had no grounding in the law, and contained conditions that would have legitimized the status quo and left Israel in de facto control of all Palestinian land. Olmert's process was just a smokescreen to conceal his preparations for the first mass bombardment of the prison Israel has made of Gaza.

"why have the Arabs been at war with Israel from 1940s through"

Because Israel has given them no other choice.