Original sentence: During the Haitian rule over the whole island of Hispaniola (1822-1844)  former Black slaves and escapees from the United States were invited by the Haitian government to settle there.In the late 1800s and early 1900s large groups immigrated to the country from Venezuela and Puerto Rico, so much so that two of the country's former presidents and life long political rivals Juan Bosch and Joaquín Balaguer   both had Puerto Rican parents
Edited sentence: During the Haitian Liberation era (1822-1844) (when Haiti unified the island of Hispanolia), former Black slaves and escapees from the United States were invited by the Haitian government to settle into Hispanolia.In the late 1800s and early 1900s large groups immigrated to the country from Venezuela and Puerto Rico, so much so that two of the country's former presidents (and rivals ironically in that they challenged each other politically) Juan Bosch and Joaquín Balaguer   both had Puerto Rican parents