One of the achievements of Spanish exploration was . A. mapping the coast of Africa B. claiming Brazil for Spain C. finding large amounts of gold in Africa D. proving the existence of the Americas Please select the best answer from the choices provided A B C D

D. Providing the existence of the Americas.

Explanation:

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texas governor sam houston opposed secession, but was unable to prevent it. in this speech, given prior to lincoln's election, he presents the argument that slavery would be safer within the united states than outside of it. it was a prescient argument, and one held by several other southern leaders.

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every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

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