Answer:
Disadvantages: Some primary sources, such as eyewitness accounts, may be too close to the subject, lacking a critical distance. Others, such as interviews, surveys, and experiments, are time consuming to prepare, administer, and analyze. Primary sources help students relate in a personal way to events of the past and promote a deeper understanding of history as a series of human events. Because primary sources are incomplete snippets of history, each one represents a mystery that students can only explore further by finding new pieces of evidence.
Explanation:
What does the Declaration of Independence say about the rights of people?
The declaration of Independence of the United States according to the "Center for Civic Education" is stated the following:
"We hold these Truths to be self-evident, that all Men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty, and the Pursuit of Happiness"
In other words since the U.S.A became independence, the human rights were important for them. They took the time to take a look in what they needed to improve to make the beautiful country that we see today.
Historians use terms such as A.D, B.C, decade, and century to refer to periods of time. The correct answer is B, periods of time.
The society has been industrialized.
