Under which treaty Portugal could claim and occupy everything east of the imaginary line in Atlantic while Spain could claim everything west of the Atlantic? |ForumIAS

[A] Treaty of Paris

[B] Treaty of Lisbon

[C] Treaty of Tordesillas

[D] Treaty of Rome

Answer: C

Notes:

In 1497, under the Treaty of Tordesillas (1494), the rulers of Portugal and Spain divided the non-Christian world between them by an imaginary line in the Atlantic, some 1300 miles west of the Cape Verde Islands.
Under the treaty, Portugal could claim and occupy everything to the east of the line while Spain could claim everything to the west.

Source: Source: Themes in Indian History – Part III