Reconstruction-
example of one challenge to change.
1) political
2) economic
3) social

1. Political example would be the US Civil war

2. An economic example of reconstruction is after the south lost to the north after the Civil war and the south had to reconstruct after their debt

3. A social reconstruction would be enemy's who were your friend before and now you want them to be your friend again so you talk it out

answer: not really

explanation: the disadvantages of wikipedia are:

open to spam anyone can edit it requires internet to collaborate.

the advantages of wikipedia are

anyone can editeasy to learn frompeople from other countries can share the same document