Answer:
the UMWA organized the district 21 branch of the united mine workers.
Answer:
To avoid the ethical issues a true experiment would cause.
Explanation:
A quasi-experiment is a factual conventional study that is used to calculate the causal effect of interference on a target population without an irregular function. Quasi-experimental research shares closeness with traditional experimental design or randomized controlled trials, but lacks the element of random assignment specifically for treatment or control.
Instead, quasi-experimental designs typically allow the researcher to control the assignment to treatment status, but use some criterion other than random assignment (For example- an eligibility cutoff mark).
I believe the answer is: Case study
Case study refers to a form of research that includes in-depth and detailed examination toward a certain subject study as its method of collecting data. Case study is the type of research that's the most popular by researchers in formal work background/ settings.
Because it covers up most of the central and northern parts of mexico
Hey there!
Fertile means very suitable for farming - in other words, very rich and full of nutrients plants and food need to grow. When you say soil is fertile, often that means it's capable of producing massive food surpluses due to the fact that it can grow so much.
It's a region because it has the two rivers, the Tigris and the Euphrates around it. Unlike other regions around the area, the soil was unnaturally fertile, and that's why it takes up it's own region because it's not the same anywhere else.
It's a physical region. Humans did not create it, and the soil is part of what makes it physical. The settlers used the soil, but didn't make it.
Hope this helps!
