 Complete the following phrase:  By the turn of the 19th century, King Andrianampoinimerina had reunited the highly populous Kingdom of Imerina, located in the central highlands with its capital at Antaarivo. His son, Radama I, began to exert its authority over the islands other polities and was the first Malagasy sovereign to be recognized by a foreign power as the ruler of the greater Merina Kingdom. Over the 19th century, a series of Merina monarchs engaged in the process of modernization through close diplomatic ties to Britain that led to the establishment of European-style schools, government institutions and infrastructure. Christianity, introduced by members of the London Missionary Society, was made the state religion under Queen Ranavalona II and her prime minister, highly influential statesman Rainilaiarivony. Political wrangling between Britain and France in the 1880s saw Britain recognize Frances claim to authority on the island, leading in 1890 to the Malagasy Protectorate, which was unrecognized by the government of Madagascar. The French launched two military campaigns known as the 