B. It involved exchanges with traders from China and Southwest Asia. So they aimed to control the trading routes rather than having subjects.
Answer:
The Strategic politician hypothesis
Explanation:
Strategic politician hypothesis involves politicians knowing when to make certain moves concerning their political ambitions.
President Barack Obama's popularity sagging and a struggling economy, many quality Democratic candidates decided not to run in the 2014 elections because they felt it wasn’t the right time to do so in order to support their fellow Democrats in order not to lose power to the opposition.
Negatively after; positively after Hope this helped!
Answer:
A control should have been included in the investigation
Explanation:
It is impossible for the student to interpret a correct conclusion about his experiment, without adding a control treatment where he can really compare the differences between the variables.
Control treatment is an element of research that receives all factors, except the variable being tested. The control serves to make comparisons with the other treatments, allowing to observe the exact difference between a system where the variable was tested and the system where it was not.
In the case of the question above, it would have been necessary for the student to have placed a cart on a ramp of normal height and without sandpaper. That way he could compare the speed between this cart and the carts on the other ramps, thus having a correct result.
The leader of the Knights of Labor in 1879 is Terence V. Powderly.
