Is the comlumbian exchange a big change in history? did it effect us now? ?

The positive and negative consequences of the Exchange became clear almost immediately. People on both sides reveled in new foods and animals that made their lives richer and easier, but suffered as well when old ways of life were disrupted.

what are the choices? the multiple choices?

i will answer in the comments after the choices have been said.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!