Answer: Britain
Step-by-step explanation:
The British got control over Palestine after the first World War as well as some other Arab territories. At this time, there was a Jewish minority living there and overtime the British government was pressured to create a homeland for Jews there.
After the horrors of the second World War, the pressure became very much heavier and forced the British to divide Palestine between the Arabs and the Jews and led to decades of war between the two.