Was an 1877 law which allowed individual native Americans to right their own land?

Yes, the 1877 law you are referring to is likely the Dawes Act, which aimed to assimilate Native Americans into American society by allotting individual plots of land to them. The act intended to promote private land ownership and farming among Native Americans, breaking up communal tribal land. However, it ultimately led to significant loss of tribal land and culture, as many Native Americans were unable to maintain their allotted land.