 Appeals for humanitarian aid were issued by many aid organizations , the United Nations and president René Préval . Raymond Joseph , Haiti 's ambassador to the United States , and his nephew , singer Wyclef Jean , who was called upon by Préval to become a " roving ambassador " for Haiti , also pleaded for aid and donations . Images and testimonials circulating after the earthquake across the internet and through social media helped to intensify the reaction of global engagement . 
 Appeals for humanitarian aid <a href='uninflect' title='1'><mark>were</mark></a> issued by many aid organizations , the United Nations and president René Préval . Raymond Joseph , Haiti <a href='null_genetive' title='2'><mark>'s</mark></a>ambassador to the United States , and his nephew , singer Wyclef Jean , <a href='null_relcl' title='3'><mark>who</mark></a>was called upon by Préval to become a " roving ambassador " for Haiti , also pleaded for aid and donations . Images and testimonials circulating after the earthquake across the internet and through social media helped to intensify the reaction of global engagement . 
Appeals for humanitarian aid was issued by many aid organizations , da United Nations and president René Préval . Raymond Joseph , Haiti  ambassador to the United States , and his nephew , singer Wyclef Jean , was called upon by Préval to become a " roving ambassador " for Haiti , also pleaded fir aid and donations . Images and testimonials circulating after the earthquake across the internet and thru social media helped to intensify the reaction of global engagement .