Identify and explain three reasons why the treaty of tordesillas failed

The Treaty of Saragossa did not modify or clarify the line of demarcation in the Treaty of Tordesillas, nor did it validate Spain's claim to equal hemispheres (180° each), so the two lines divided the earth into unequal hemispheres.

d is correct the right of the people to be drafted into the armed forces.

hope this let me know if it is right.

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.