By 1877, Americans purchased 83 percent of Cuba's total exports. North Americans were also increasingly taking up residence on the island, and some districts on the northern shore were said to have more the character of America than Spanish settlements. Between 1878 and 1898 American investors took advantage of deteriorating economic conditions of the Ten Years' War to take over estates they had tried unsuccessfully to buy before while others acquired properties at very low prices. Above all this presence facilitated the integration of the Cuban economy into the North American system and weakened Cuba's ties with Spain.