Natives of Ramallah began to emigrate, primarily to the United States. Timber ships would unload their cargo and sell passage to those desiring to emigrate. It gives islanders the right to emigrate to the United States and to work there. About 10% were refugees permitted to emigrate under the Geneva Convention of 1951. Britain eventually refused the demand, allowing many to either emigrate to Canada or Trinidad. However, Heisenberg refused an invitation to emigrate to the United States. Only a small percentage of those who applied to emigrate legally could do so. Unemployment is high and many Haitians seek to emigrate. Those who chose to emigrate were evacuated by ship. For three years, Muslims could emigrate and return freely. Burundi is densely populated and many young people emigrate in search of opportunities elsewhere. Olim L'Berlin, a Facebook snowclone asking Israelis to emigrate to Berlin, gained notoriety in 2014. It is very easy for Ugandan doctors to emigrate to other countries. Other individuals emigrate and become permanent residents of other nations. He also got help from brothers, whom he had convinced to emigrate.