<u>Answer:</u>
After the UN resolution on 29th of Nov in 1947 in order to partition the country into respective Jewish and Arab states with Jerusalem with the help of the corpus separatum, the Palestinian Arabs, including the veterans of the 1936 to 1939 riots, delegates of Arab youth organizations, and police basically initiated resentments against the Jewish community.
They were soon joined by volunteers from the neighboring Arab states. Jewish forces were settled mostly in the Haganah or the underground army with a fulltime component of about more than 4,000, chiefly the members of the Palmah.
The armies of Egypt, Lebanon, Syria, Jordan, and Iraq attacked what had just halted to be the British Command, marking the outset of the war between Arab and Israel in 1948.