Which royal family ruled over russia from 1613 until the russian revolution in 1917?

Following the February Revolution, the Romanov family and their loyal servants were imprisoned in the Alexander Palace before being moved to Tobolsk and then Ekaterinburg, where they were killed by the Ural Regional Soviet.

-hope this helps :)

detente translated to english means politics

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain