Which branch of government proposes laws?

Congress

Explanation:

Congress is the legislative branch of the federal government and makes laws for the nation. Congress has two legislative bodies or chambers: the U.S. Senate and the U.S. House of Representatives. 

the social historical theory explains the creation of the varnas, jats and of the untouchables. according to this theory, the caste system began with the arrival of the aryans in india. the aryans arrived in india around 1500 bc. the fair skinned aryans arrived in india from south europe and north asia.

your answer will most likely be a.