The correct answer is Group A.
The 1948 Arab-Israeli war was the first conflict between Israel and its Arab neighbors.
The partition of the British Mandate of Palestine made by the United Nations that established two states, one Palestinian and a one Jewish, was not accepted by the Arab nations that supported the Palestinian cause to keep the entire territory.
For that reason, the same day the British military abandoned the territory, Arab troops from Egypt, Iraq, Lebanon, Syria, and Transjordan invaded the recently proclaimed state of Israel. The result of the conflict was the victory of Israel, which took control of Arab land, increasing its territory in 23% more than was stipulated by the UN.
Because of this conflict, many Palestinians fled from their occupied homeland and remained refugees in neighbor countries. In the same way, many Arab-Jews from Arab countries suffered persecution from their governments and, therefore, fled to Israel.
The 1949 armistice signed between Israel and the Arab countries put an end to that particular conflict, but it did not resolve the underlying cause of the conflict and the Palestinian issue.
