does this sentences seem correct and well puctauted. if not can you correct them kindly.

1) America’s credit crisis caused a fragile financial system, which may go bankrupt in the near future.

2)Leaders are born, and their contributions to this world are made, contemporarily the very contributions are decided by time pending when to fade away.
(***what im trying to say in this paragraph is that contrubutions from leaders always have a time limit***)

1. I'd use the word "produced" instead of "caused."

2. This has a comma splice in it -- that is, a comma where there should be a period. How will you redo this sentence?

Leaders are born. Their contributions to this world are made. Contemporarily the very contributions are decided by time pending when to fade away.

is this sentence right, and does it make sense of what im trying to say.

It would be smoother to rephrase the first part this way, rather than into two short, choppy sentences:

Leaders are born and they make their contributions to this world.

The second part ("Contemporarily..."), however, doesn't make sense to me. If you can expand on what you're trying to say, I may be able to think of a better way to write this.

im trying to say like powerful leaders who rfer to themselves as king of kings, try to outrun time. they do this by building archetectures or some type of statue of themselves, but in realty no leader ever beat time. time wrecks what they built over a certain period. time is therefore the most powerful opponent to all. when a laeder contrubutes something, time decides when to wrck it. somewhere along that line... but i don't know how to put it in words

??

Many powerful leaders refer to themselves as king of kings and try to outrun time by erecting buildings or large sculptures or statues of themselves. In realty, however, no leader ever beats time. Time wrecks what they build and is therefore the most powerful opponent of all. No matter what a leader builds, time will eventually destroy it.

thanks alot

You're welcome.