Why did Spanish plantation owners in the West Indies begin using enslaved Africans instead of enslaved natives? 1Plantation owners could trade food and clothing for enslaved people.
2European diseases had killed much of the native workforce.
3Plantation owners wanted to help enslaved Africans pay their debts.
4Africans would only sell enslaved people to plantation owners.

Correct answer is European diseases had killed much of the native workforce.

Explanation:

As we all know around 90 percent of Natives died because of the diseases and other problems that were brought to them by Europeans. That is why they could only turn themselves to slave trade. Slaves were usually imported from Africa.

Other answers are false, especially options one and three, which have no connection with historical events. When it comes to option 4 it was actually pretty often that Africans would sell slaves to Europeans.

because he was a christian?

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).