<span>Positive: horses, food, and new technologies. Negative: severe depopulation, disease, displacement, and loss of lands.</span>
Answer:
The expansion of the African slave trade was a result of the demand for slaves in the colonial Americas.Tens of thousands of people were forcibly transported out of Africa to work on plantations, in mines and as domestic servants all over the Americas. The slave trade continued for hundreds of years, only ending in the nineteenth century. The slave trade increased because it was profitable. Those who controlled the trade - European slave-owners and traders, and African rulers and traders - benefited greatly from it. African rulers and traders were involved in the slave trade because selling slaves was a way to gain power and wealth.
Explanation:
"<span>A. It amounted to an informal declaration of Cold War" would be the best option, but it was not even remotely formal--in that it simply said that the US would come to the aid of any countries in danger of becoming communist. </span>
The correct answer is option C) Steam Engine
Steam Engines were developed in the 1st Industrial Revolution in England. They led to the development of trains which provided fast travel throughout the country.
Steam Engines require the burning of coal to make steam and push machinery. This meant that the Steam Engine and Coal were perfect complimentary products and the increase in demand for one, would automatically increase the demand for the other.
Railway lines completely transformed countries as more and more goods and people could be transported cheaply and quickly.
From England, steam engines and trains spread to Europe, the US and other parts of the world and for the next 150 years, trains became the preferred mode of transport.