"...The first war immediately followed the proclamation of the State of Israel, May 14, 1948. Arab forces from Egypt, Transjordan, Iraq, Syria, and Lebanon occupied the areas in southern and eastern Palestine not apportioned to the Jews..."Yes, Yes and yes
You failed to mention that the Arab forces stopped at the areas "not apportioned to the Jews" because the Israeli forces wouldn't let them go any farther.
The stated, well publicized goal of the Arab invasion was to "drive the Jews into the sea."
So, No, No, and no to your argument.
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Map 1: Partition Plan by UN
Map 2: Armistice lines after 1948 war.
Isreael gained ground in the east and in the north after the war of 1948, areas which are now recognized as a part of Israel proper.