The constitution of 1934 thus established a more direct mechanism for the federal executive to control the economy, pursuing a policy of planning and direct investment for the creation of important industrial complexes. State and mixed public-private companies dominated heavy and infrastructure industries, and private Brazilian capital predominated in manufacturing. There was also a significant growth of direct foreign investment in the 1930s as foreign corporations sought to enlarge their share of the internal market and overcome tariff barriers and exchange problems by establishing branch plants in Brazil. The state thus emphasized the basic sectors of the economy, facing the difficult task of forging a viable capital base for future growth in the first place, including mining, oil, steel, electric power, and chemicals.