Respond to someone who is challenging your historical knowledge and provide them with a detailed project to research.
Really, that's the best you can do. Nothing better then arguing with someone who has no historical knowledge. Here's a project for you. Google the Ottoman empire and the first world war. Then Google the Arab war of 1948, and then thee six day's war. Then for fun Google how the Palestinians came to be where they are, and where they came from. Clue here, Egypt and camps in Jordan. Now you will be up to speed  and can avoid writing the garbage that you do.