"Redstu Yiddish" is Yiddish for "Do you speak Yiddish?"
Hebrews speak the Hebrew language.
Some of them did, yes.
Russian Jews speak Russian as their first language. Yiddish is a rare second language in Russia. Hardly any Russian Jews can speak it (Most Yiddish speakers in the world live in Belarus, Israel, and Argentina).There are no longer any native speakers of Yiddish in Russia.
Hebrew is the national language of Israel, and one of two official languages (along with Arabic). More than 6 million Israelis speak Hebrew.About 200,000 people speak Yiddish in Israel, mainly among the Haredi communities. Only about 1 million people speak Yiddish in the entire world.
No, but most of my late family members did.
Yiddish
They have no reason to speak Yiddish. It is or was the main language of most Ashkenazi Jews and is largely based on archaic German.
Yiddish
Ashkenazi Jews
It is not a problem
"Indian chief" typically refers to Native American tribal leaders, not Indian as in from India. Yiddish is a Jewish language. It is unlikely for an Indian chief to speak Yiddish, as they would likely speak one of the indigenous languages of their tribe.