The practice of slavery was first started in the Americas by ___ Select the best answer from the choices provided.
A. the U. S.
OB
the British
the Spanish
D.
the Portuguese

The Spanish

Explanation:

The Spanish were the first to colonize what is present- America

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

< 3

d is the answer. leo should include the source.