The American poineer families set out to explore the west in the 1940s please thank me and send friend request
Answer:
Internal validity.
Explanation:
Internal validity is the study in which trust relationship is build between treatment and outcome. This relationship is known as <em>cause-and-effect. </em>
In this type research, the studies are based on whether the finding is questionable or not. The research which can overrule the possibility of alternative explanations of our findings is internally valid.
The threats of internal valid study are:
- <u>Natural Improvement </u>
- <u>Maturation</u>
- <u>Historical Events</u>
- <u>Placebo effects</u>
- <u>Nonspecific effects</u>.
So, the correct answer is 'Internal validity'.
Answer:
They were used as labor to built levees and floodways to prevent future flood.
Explanation:
The states often used prisoners as labors for both government project or they can put them on hire as labors for private companies. This method will resulted in lower cost since they do not necessarily have to pay the convicts for their work.
Flood of 1927 was regarded as the most destructive flood in american history. The flood caused suffering for around 630,000 citizens. In order to prevent this from happening again, the federal government initiated one of the largest infrastructure building project in American history. They initiated the project to built levees and flood ways along the Mississippi river.
Convicts made up the vast majority of workers that were used in that government project.
Answer:
speed = distance/time (or s = d/t)
The spread of slavery into the Louisiana Territory was limited.<span>
The US in the beginning was trying to balance the power between the Northern "Free" states (no slaves), and the Southern slave states. However, Missouri soon wanted to join the Union, as a pro-slavery state. This led to arguments on whether Missouri should be admitted or not. The Missouri promise allowed Missouri to join as a slave state into the Union, but, to balance the power, Maine was created to be a free state.
</span><span>The spread of slavery into the Louisiana Territory was limited.
Except for Missouri, all other states created within the Louisiana Territory was to be free states.
hope this helps</span>
