The ssa faces new challenges the twenty first century because

the answer is;

explanation:

1. there are more workers paying into the system.

2. it's services are no longer needed by american workers.

3. there are greater number of retirees in the system.

4. it's revenues are needed in other government programs.

you.. hope it will you..

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.