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:
There were some factors that;s why they didn't unite. They were:
1) Discrimination in Hindu religion on basis of their casts
2) Fight between Hindu & Muslim
3) Many people were afraid as Britishers had weapons
4) They scared 'cause the whole system was in the hand of "East India Company"
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In 610 CE, the prophet Muhammad has a vision that ultimately led to the creation of Islam. However, when Muhammad died in 632 CE, people disagreed over who should succeed him as caliph. The Sunnis believed that Abu Bakr (his successor) was the right choice, which the Shiites disagreed, believing that the next caliph should've been Ali, Muhammad's brother in law. Still to this day, there is a definite split, and while they both have the same fundamental beliefs, neither get along well. This issue is especially prevalent in the Middle East where the majority of people are Sunnis, however the Shiites do not want them to hold power, so rebellion occurs. Likewise, when the Shiites gain power, the Sunnis rebel. The terrorist group ISIS is technically fighting for the Sunnis, however it is important to note that they practice a very radical form and do not represent the beliefs of most Muslims.
to take the Holy Land back from the Islamic Empires
the first cruscade was a relgous battle to take jerusalum