Trade brought people together with the exchange of goods, raw materials, and ideas. this was possible due to:

1) advancements in communication
2) advancements in transportation technologies
3) merchants acting as agents for leaders
4) cultural openness toward others

The sun's parallax would be 180 degrees, greater than which you can't get.  so a. would be your anwser 

Answergranulation;

Answer(12) judaism; ans(11) all of the above; //ans(10) islands that are artificially created; //ans(9) people accept that the caste system keeps order in society and prevent chaos; ///ans(8),brahman; ans(7) the sikhns; ///ans(6); the non-cooperation movement; asn(5)sporadically grant congressional requests; /ans(4) all of the above; ///ans(3) true; //ans(2) true; //ans(1) false;

Ansarabs took control;