There is no such thing as a Shinto god. There are, however, Kami, which are more like feelings or spirits than gods. (The kanji, or Chinese character, for "kami" loosely translates to god when the suffix "sama" is added. Thus, kami-sama means god.)
they worship their gods in shrines
Shintos have no days of worship.
izanagi, Izanami, or Kami.
Shintoism is really a form of ancestor worship and as such it is not concerned with gods, either multiple or single, however, prior to WW II the Emperor of Japan was regarded as a god and as a descendant of the sun god, which makes at least two gods. When Emperor Hirohito surrendered, he also admitted that he was not really a god. But there are still ancestors to worship.
they worship kachina dolls who were there gods
no
The worship of multiple gods is called polytheism.
They worship the gods by holding ceremonies to certain gods, and make sacrifices in their honor.
did ancient egyptian farms worship the gods
Norse gods
Yes Chinese people do worship many gods
No the Romans did not force the Jews to worship their gods.
the people of sumer practiced polytheism the worship of many gods