"in 1990s, the international community expressed outrage over nigeria's "

There were several coups during the 1990s so I am guessing the answer is internal violence 

In the 1990s, the international community expressed outrage over nigeria's internal violence.

Ifound this on google i hope this you “the correct answer is: the czech republic's decision in 2003 to join the european union indicated that the czech republic was willing to forge economic ties with other nations. the european union is a political and economic organism composed by 28 states located mainly in european lands.”

Answeroil-shale;