No, these are two separate religions.
No. Paul was pretty explicit that gentile converts to Christianity are not obligated by Jewish law (circumcision, the laws of kashrut, etc.). The Jerusalem church, on the other hand, was clearly composed of observant Jews who continued to keep the law of the Torah and were considered to be Jews by the larger Jewish community. This picture is consistent with some of the prophetic visions of a messianic age when all the nations will worship God (Zechariah 14, for example); this prophesy is not that all will become Jews, but rather, that all will come to God.
Yes, same God for also Christians and Jews.
No, Christians do not reject Jews. However, Jews reject Christians.
The holy city for christians is Jerusalem, which is also the holy city of the jews.
Jews like Paul persecuted the christians.
The belief of Jews and Christians that influenced European civilization was the way they marked time. There was also a belief that there is a supernatural being who controls the universe.
Christians believe Jesus is the messiah, Jews don't.
Christians believe that the Messiah Has Come. Jews believe that He Has not.
Jews are not Christians. Christians believe that Jesus of Nazareth was the Messiah. Jews (and remember- Jesus was a Jew himself) believe that the Messiah has not yet come.
They had the power to persecute Jews and Christians if they had wanted to
The old testament is important to the Jews, but also to all christians.
True Christians do not hate Jews. Nominal Christians may hate them because they are a different religion.
a religion is a set of beliefs by which you live. christians and Jews also believe that you should commit to it when you are a child also. If you don't, then it is not truly a religion, because you are undecisive of it, therefore, not living by it.