The main social restriction amongst Orthodox Jews is that they do not touch non-family members who are of the opposite sex. Another major restriction is the consumption of food, because religiously observant Jews only eat kosher food, it can limit where and with whom they eat.
A common belief is that Orthodox Jews do not date or have girl/boyfriends. This is not correct at all.
In the Middle Ages the Church imposed restrictions, and in later centuries it was mainly governments that imposed restrictions.
Thousands of Anti-Semitic Laws have been introduced in hundreds of different countries. They did things as varied as give housing restrictions for Jews alone, to expulsion of Jews, to professional restrictions for Jews alone, to marriage restrictions, to forcible conversions, etc.
Hitler treated the Jews as outcasts. The Jews were persecuted and then subjected to restrictions that anyone else were not given.
After the Passover in "Night," the Jews faced stricter restrictions by the Nazis, including forced labor, increased violence, and eventual deportation to concentration camps. The Jews were subjected to harsh living conditions, limited food rations, and constant fear and persecution. These restrictions culminated in the mass extermination of Jews during the Holocaust.
World War 1 ended in 1918. There were no restrictions in Germany on where Jews could live till 1939.
Jews have no dietary restrictions when it comes to plant matter; they eat all of the same vegetables that Non-Jews in the same region eat.
No, however there is a Jewish law that states interest cannot be charged to a fellow Jew. Jews may charge interest to non-Jews, and non-Jews have no restrictions regarding interest (under Jewish law).
This question can be read one of two ways and each can be read about at the Related Questions below.
During the Holocaust, there were many restrictions that were placed on the Jews. They lost their citizenships and lost their professions. They were forced to retire at times and mixed marriages between jews and non-jews was not allowed. No Jewish children were allowed to attend school. Every male Jew was named Israel and every female Jew was named Sarah.
Discrimination toward Jews occurred in many areas of Canada. There were hiring restrictions for Jews in businesses, the civil service, and the other professions. In some cities, Jews were forbidden to buy property or to join certain clubs and organizations.
I don't know what retrictions are you talking about. Jewish laws or Laws imposed on the Jews by outsiders?
That depends on the period and country you are asking about. Under British Mandate Palestine, Jews were not allowed to own guns while there were no restrictions on Arab gun ownership.