The government wanted to prevent slavery form going to the wast ward states but the south wanted to extend slavery over to the west.
Is this multiple choice? If not, i'd say that it is important for a historian to be sure of the authenticity of a primary source because a primary source needs to be proven to be accurate. It is important to study and make sure the source is authentic because the accuracy must be proven
Answer:
new inventions change the life of people because it makes the whole world as a global village. it makes our work easier and faster.
