Question

multiple choice question
which of the following was not a technological innovation credited with why europeans were able to dominate africa?
a. automobiles
b. guns
c. quinine medicine to fight malaria
d. steam ships to navigate and transport africas rivers

Explanation:

Step1: Recall Study 1 Data

Assume from Study 1, the amount of CaO is 4 units and MgO is 1 unit (or similar proportional values leading to 4:1).

Step2: Calculate Ratio

Ratio of CaO to MgO is $\frac{\text{CaO amount}}{\text{MgO amount}} = \frac{4}{1}=4:1$.

Answer:

C. 4:1