Answer:
The answer is B. Cross-sectional
Explanation:
Cross-sectional research can define as a research that involves using different groups of people who differ in the variables of interest but share other characteristics. Cross-sectional research are studies which based on observations that take place in different groups at one time.
Cross-sectional study can be define as an observational research that analyze data of variables collected at one given point in time across a sample population.
Answer:
The United States was not the only or even first country to end slavery.
Explanation:
In 1862, President Abraham Lincoln issued the Emancipation Proclamation declaring “all persons held as slaves… shall be then, thenceforward, and forever free,” effective January 1, 1863.
Suppose both john and bill can do two tasks in a day. if john can do each of the two tasks faster than bill, then <u>John should specialize in performing the task for which he has a </u><u>comparative advantage</u><u>. </u>
Comparative advantage refers to the capacity to provide goods and offerings at a lower possibility price, not always at a greater quantity or satisfactory. Comparative gain is a key perception that trade will still occur even though one u . s . has an absolute gain in all products.
In an economic model, retailers have a comparative advantage over others in producing a selected desirable if they can produce that excellent at a lower relative opportunity price or autarky rate, i.e. at a decrease relative marginal price previous to trade.
In economics, a comparative advantage occurs when a country can produce a very good or carrier at a lower opportunity value than another u . s .. The principle of comparative gain is attributed to political economist David Ricardo, who wrote the book standards of Political economic system and Taxation (1817).
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The answer is the last option.
The townshend acts taxed goods imported into American colonies. The colonies saw it as an abuse of power since they didn't have representation in parliament