Sanhedrin 19 - A Completely Fake Quote
The Quote
“Every place the Jews go, they must become commanders of their lords.” — Sanhedrin 19
The Reality
There is no such quote at Sanhedrin 19, or anywhere else.
Sanhedrin 19 deals with various laws of mourning for kings and high priests, testimony of and against kings and whether the widow of a king may remarry. Nowhere is the subject of Jewish domination over non-Jews discussed. The quote does not exist.
Summary:
The quote is completely made up. It does not appear at Sanhedrin 19, or anywhere else.