I am pretty sure that the way how Muslim conquerors usually treated Christians and Jews in the lands they conquered is being revealed by the third option from the scale represented above :The Muslims let Christians and Jews practice their faiths. Even though these were second-class citizens the only thing they were allowed to do is to<span> practice their faiths.</span>
The Portuguese King found out that Spain was sponsoring trips to the new world and me became very angry. Then, the King sent a threatening letter to the Catholic Monarchs and in those, he stated that by the Treaty of Alcáçovas, which was signed in 1479 and confirmed in 1481 with the papal bull Æterni regis, all lands at the south of the Canary Islands were granted to Portugal. Which caused them to go to the Pope, which then created a line to divide the new lands between those two countries, in a way to avoid a war that the Spanish most likely would lose.
In the end, Portugual was not pleased with the division, mostly because it prevented them to conquer India witch was a goal pursued by them for a long time. So they went to the Catholic Monarchs to renegotiate directly the position of the line. The treaty of Tordesillas was the diplomatic solution found by the Catholic Monarchs. Curiously, even though the treaty and the resulting line was negotiated without consulting the Pope, some sources call the division the "<em>Papal Line of Demarcation"</em>.

Type that in your calculator to get 268, hope that helped
One of the main reasons why primary sources are valuable to historians is because "<span>They give insight into the thoughts and feelings of a participant in history," since these are sources that originated during the time in question, and are "unaltered". </span>
That English speaking nation was Australia.