What was the goal of the campaign known as freedom summer

The campaign, Freedom Summer, wanted to get more freedom for African American voting. They wanted to expand it. About 100 Caucasian college students had helped cofo register voter in November 1963, and in 1964 a few more hundred students were invited for Freedom Summer, a much-expanded voter registration project. 
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In the midwest because it has more moderate climate than the north or south west which makes farming far easier.