Jews were and are viewed as inferior to Muslims.
Yes (Talmud, Berakhot 30a).
They were built underground.
first synagogue was built in 1371-1387
Yes, maglev trains can be built underground. In fact, the majority of the Chuo Shinkansen maglev line being built in Japan will be underground.
No. The earliest synagogues were built in what is now Israel. Ethiopian synagogues, while old, are not as old as the first synagogues in Israel, which existed as far back as the days of the early Prophets (Talmud, Megillah 26b and Berakhot 31a).
underground
The first pharmaceutical was built by Muslims in Iraq
she built a underground railroad
underground
It was built in the 1890s and opened in December 1896
yes it is
Nothing.