Answer:
that one variable precedes the other in time, that the two variables are correlated and that this relationship is not spurious.
Explanation:
In <em>Experimental and Quasi-Experimental Designs for Generilized Causal Inference</em> (2002), researchers Cook and Campbell present a set of conditions that must be met in order to establish a valid causal relationship: <u>one variable precedes the other in time</u> (temporal precedence), <u>the two variables are correlated</u> (covariation), <u>and that this relationship is not spurious</u> (no third variable is present).
It’s a system of segregation in Africa that separates the blacks from the white. It ended in a series of negotiations.
The medieval times: primitive life or wellbeing in for protection the vast majority in the medieval times structure little networks around a focal ruler or expert a great many people lived on an estate which comprised of the manor in the congregation in the town in the encompassing farmland
I tried my best I hoped I helped
<u>Answer</u>:
Since the mid 1970s, the United States had a significant trade deficit.
<u>Explanation</u>:
The U.S had undergone a trade deficit since the 1970s. This has been contributed to the fact that they have been importing way more supplies and goods than the other countries were buying from the Americans. These imports have affected the native industries. Also, the demand for American products went down drastically and thus contributing to the deficit.
While Europe and Great Britain undertook industrialization in the 18th century, Americans started it in the 19th century-this delay resulted in the US depending upon imported goods and also in US struggling to meet Europe's levels of export.
