Officially yes, though not all individuals are religious.
There are Jews in many countries, but the only nation which is officially Jewish is Israel. Israel is a secular democracy, where citizens of all faiths have equal rights, but the national holidays, for instance, celebrate the Jewish festivals. -----------------------------------------------------------------------------------------
Israel is a Jewish state, but 20% of its citizens are not Jewish.
Israel celebrates all Jewish holidays plus some modern holidays such as Israeli Independence Day, Memorial Day, Yom Yerushalayim and Yom ha-Shoah.
The Jewish home is considered to be Israel. All Jews are welcome there, and some Jews think that all Jews should live in Israel.
All Jews who are at least minimally observant.
Israel did not declare itself a Jewish state, it was created as a Jewish state. Nor does all the world accept multi-religions.
The faith of Jesus Christ was Jewish. Everyone in Israel back then were all Jewish.
Yes. The Jewish State of Israel is a modern country with cars, computers, and all sorts of modern conveniences.
75% of the population of Israel is Jewish, but not all Jews identify themselves as "practicing."
Muslims in Israel celebrate Muslim holidays with the same freedom that Christians in Israel celebrate Christian holidays and Hindus celebrate Hindu holidays. Muslims attend communal prayer services in the mosques, hold public and/or family celebrations, visit their holy places, and prepare traditional foods for the occasion, all as appropriate to the occasion. Religious freedom, and freedom from religious discrimination, are guaranteed by law in Israel.
It is typically celebrated in Jewish homes all over the world.
Many did, but not all.