Complex sentence: But beginning in 1965, accused of political activity on behalf of Tshombe, the Congo-Brazzaville authorities expelled him to Bangui, where the President of the Central African Republic David Dacko imprisoned Darlan on arrival, probably to discourage him from resuming political activity.
Split into simpler sentences: But beginning in 1965, accused of political activity on behalf of Tshombe, the Congo-Brazzaville authorities expel him to Bangui. On arrival, the President of the Central African Republic David Dacko imprisoned Darlan, probably to discourage resume political activity.