The choices can be found elsewhere and as follows:
(1) lateen sail
(2) iron cannons
(3) camel caravans
(4) moveable type
I think the correct answer from the choices listed above is option 3. The technological innovation that was essential to stimulate the expansion of the gold salt trade in west africa would be camel caravans. They were able to trade more.
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Hitler experimented on the Jews and committed mass genocide to the Jews because he thought that the Germans lost WW1 due to the Jews
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There was lots of Gold and Other precious medals found in the Americas. They also thought it would be easier for trade routes.
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Answer:
Constitutional Convention, (1787), in U.S. history, convention that drew up the Constitution of the United States. Stimulated by severe economic troubles, which produced radical political movements such as Shay’s Rebellion, and urged on by a demand for a stronger central government, the convention met in the Pennsylvania State House in Philadelphia (May 25–September 17, 1787), ostensibly to amend the Articles of Confederation. All the states except Rhode Island responded to an invitation issued by the Annapolis Convention of 1786 to send delegates. Of the 74 deputies chosen by the state legislatures, only 55 took part in the proceedings; of these, 39 signed the Constitution. The delegates included many of the leading figures of the period. Among them were George Washington, who was elected to preside, James Madison, Benjamin Franklin, James Wilson, John Rutledge, Charles Pinckney, Oliver Ellsworth, and Gouverneur Morris.
Explanation:
This all I know.
Hope it helps!~
The great depression resulted in a nation wide decrease in food, money and work. This affected peoples ability to pay taxes. Without the government getting money from the people there was no trade happening between the USA and other countries and that resulted in other countries losing essential products and harming them.