By DÁNICA COTO and EDITH M. LEDERER, Associated Press SAN JUAN, Puerto Rico (AP) — Ongoing volcanic eruptions have displaced about 20% of people in the eastern Caribbean island of St. Vincent as a U.N. official on Wednesday warned of a growing humanitarian crisis. Between 16,000 to 20,000 people were evacuated under government orders before La Soufriere volcano first erupted on Friday, covering the