Hi there!
The passage of the Black Codes in many southern states enraged both northerners and African Americans across the country. In response, Congress passed the Civil Rights Act over president Andrew Johnson's veto as well as the Reconstruction Act of 1867. These acts effectively outlawed discrimination on basis of race and granted equal rights to all under the Constitution. They also guaranteed that a citizen's right to vote could not be denied "on account of race, color, or previous condition of servitude." All of these actions effectively invalidated the Black Codes. However, the road to reconstruction was still a long and rocky one.
Hello There! ^_^
Your question: During what years did the French and Indian war take place..?
Your answer: The year 1754 is when the French and the Indian war took place.
Hope this helps!
Sources are used in a paper to show what ideas inspired you and whose theories you would be using and you cite the sources in order to avoid plagiarism. If you don't have sources, your paper will not be valid and you could get accused of plagiarism. The more sources you use the better but you should keep in mind that they need to be important for the paper and used with a purpose and not just to increase the number of sources.