What was the primary motivation for President Roosevelt to begin building the Panama Canal

wanted to ship goods quickly

Explanation:

American and British leaders and businessmen wanted to ship goods quickly and cheaply between the Atlantic and Pacific coasts.

what are the others?

- 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."

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