In 1999, the National Football League (NFL) began allowing teams to challenge officials' calls using instant replay. Why do you think this continues to be a controversial rule? What are the pros and cons?

One of the pros is it allowed them to keep their job loger, con is other people may have not liked they spent most of their time doing football.

Explanation:

Hope I helped, GL<3

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.