This is a picture of a so-called "Blue Box", design from 1940.
It shows how much land the Jewish National Fund had bought by 1940.
You can see that it covers almost the entire coast line, much of the Galil to the lake, and parts of the northern Negev as well as most of Jerusalem.
The JNF controlled a bit more than half the land owned by Jews in the country.
The land was then under British sovereignty.
The land shown on the map on the box was neither owned by Arabs nor under the sovereignty of any Arab state (and hadn't been for hundreds of years).
If you look at the original plan for partitioning the Cisjordanian part of Palestine, you can see that apart from Jerusalem, the Jewish state was made up of the land bought by Jews, the JNF plus the Negev which was (and is) inhabited by Bedouins allied with the Jews.
That's the plan the Jews accepted and the Arabs rejected. And that's the Israel that was founded and then attacked by the Arabs.
The Zionists, far from wanting to "steal land" and "expel Arabs by force" were willing to accept a state based the land they bought plus the bigger part of the Negev desert minus the holiest city of Judaism, which, although Jewish-owned and with a Jewish majority at the time, was destined to become an international city.
Only AFTER the attack did Israel grow into areas not bought by Jews.
The Arabs called for "throwing the Jews into the sea". They wanted to expel the Jews from the land the Jews had bought (and in some cases owned for millenia!). But they lost.
And this is when the legend started of the Jews "stealing" the land. "Stealing" means here "A Jew bought it and when we tried to take it back from him he managed to defend himself and won".
The Jews/Zionists did NOT "steal Arab land" causing the Arabs to "defend their land". The Jews bought land and lived on it until they were attacked.
Since then Israel has kept offering the land it took in exchange for peace, which the Arabs consistently rejected.
Either way, whether Israel should keep the land it won in wars or not, the land Israel was founded on was NOT stolen. And it is a typical anti-Semitic lie to claim that it was.
Either Jewish money is as good to you as anybody else's money or you are an anti-Semite. If you are not an anti-Semite you HAVE to accept that land Jews buy is after the sale THEIRS.
What does the Holocaust to do with it?
Nothing, and it is not usually the Zionists who bring it up. The only thing the Holocaust has to do with this at all is that the Jews, hearing their enemies call for their extermination, this time BELIEVED it and fought back, knowing that nobody else would stop the attackers.
What about the Jewish refugees from Arab countries?
Those that arrived before 1947, usually from Iraq, were settled first in refugee camps and then in land already bought. Those that arrived after 1947 were settled first in refugee camps and then in land abandoned by Arab refugees. Note that those who demand that that land must be "given back" to the Arabs never demand that the Jews get their land back in the Arab countries they came from.
What about the Turks?
Nice people. They ruled the land before the British took it.
What about the British?
Nasty folks. They were good enough to install Hitler's friend, Muhammed Al-Husainy as "Grand Mufti" in Jerusalem (he was fired when the Jordanians took the city) and later equipped and comandeered the Arab armies that attacked Israel.
What about Israeli military superiority and Jewish superiority in numbers?
It is one of the more miraculous aspects of modern physics that a few hundred thousand Jews are more people than millions of Arabs and that an army financed by Holocaust survivors was vastly superior to a British-trained and British-equipped Jordanian army. Scientists are still puzzled how this could possibly have happened and most modern armies now try to hire Jews to increase their numbers manyfold and make up for any possible technological superiority of the enemy.
People who consider this oddity a "miracle" are rightly condemned as religious fanatics whereas the sane belief is that 100,000 is bigger than one million and that British weapons and equipment are just rubbish compared to what the average Holocaust survivor's wallet could buy in 1947.
(If you find sarcasm, you can keep it.)