Why do hanukkah dates change every single year?

Which controversial political issue of the 1920 is reflected in the cartoon

In the 1950s, the u.s. government encouraged american jazz musicians to perform in the soviet union, which was an enemy of the u.s. at the time. of what foreign policy goal is this a good example? strengthening world economic growth improving education for the global population advancing the growth of democracy and good government increasing understanding of american values and creating a receptive international environment

Which physical subsystem includes the air we breathe