How many groupings were in the Indo-Aryan caste system
1
2
3
4

4

Explanation:

A caste system was developed amont hte Indo-Aryans of the Vedic Period.  This system splitted the society into four major groups.

im pretty sure it has something to do with the end of ww1

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers