A gentlemen's agreement or gentleman's agreement is an informal and legally non-binding agreement between two or more parties. It is typically oral, though it may be written, or simply understood as part of an unspoken agreement by convention or through mutually beneficial etiquette. The essence of a gentlemen's agreement is that it relies upon the honor of the parties for its fulfillment, rather than being in any way enforceable. It is, therefore, distinct from a legal agreement or contract, which can be enforced if necessary
The steam engine was crucial to Great Britain's Industrial Revolution. The answer to your question is D. I hope that this is the answer that you were looking for and it has helped you.
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Since enslaved people were first brought to the US, promoters of anti-Black racism and white supremacy co-opted the authority of science to justify racial inequality. A history of pseudoscientific methods “proving” white biological superiority and flawed social studies used to show “inherent” racial characteristics still influence society today.
This was not unique to the US, however. Examples of scientific racism can also be found in NAZI Germany prior to and during WWII, during which time German scientists produced literature ranking the various races of the world, with Arians at the top and Jews and Blacks at the bottom.
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