Answer:
Corroboration. When you are analysing a source, it is helpful to compare what information it provides when compared with other sources. This helps you to more successfully evaluate your sources, especially in regards to their accuracy.
Explanation:
The purpose of federalism is for the development of state ,to achieve the balanced between states & to utilize the resources for fulfilling needs of peoples
<span>The Missouri compromise achieved the goal of ending the expansion of slavery into newer territories in the United States. Missouri was entered into the Union as a slave-state as long as the other Western territories were not supporting slavery.</span>
The hiring and firing of the workers when presidential administrations changed in 19th century was known as spoils system. It began when president Jackson became the president in 1829. His supporters thought it necessary to reform the federal government. His opponent opponent considered it to be a corrupt be a corrupt method for political patronage. The opponents liked to call it spoils system. The phrase was first used by Senator William L. Marcy in his speech. President Hayes wanted to reform the civil service appointments which were based on spoils system and tried to change it with merit system.