Complex sentence: After a month, the government requested troops and police from the Gulf Cooperation Council, which arrived on 14 March, and a day later, the king of Bahrain declared martial law and a three-month state of emergency.
Split into simpler sentences: After a month, the government requested troops and police from the Gulf Cooperation Council, which arrived on 14 March. A day later, the king of Bahrain declared martial law and a three-month state of emergency.