Japan’s Prime Minister Shigeru Ishiba on Wednesday proposed an economic zone connecting the Indian Ocean to Africa as the country seeks to play a greater role in the African continent while America’s presence there decreases and China’s influence rapidly grows.

Ishiba, kicking off the Tokyo International Conference on African Development (TICAD), pledged to strengthen business and investment in the region and promote free trade by connecting the Indian Ocean region to the African continent.

“Japan believes in Africa’s future,” Ishiba said. “Japan backs the concept of African Continental Free Trade Area,” which aims to bolster the region’s competitiveness.

This year’s summit comes as U.S. President Donald Trump’s tariff war and drastic cuts in foreign-aid programs have negatively affected development projects in Africa. Meanwhile, China has been expanding its foothold in the area since 2000 through infrastructure building and loan projects.

The three-day summit in Yokohama, near Tokyo, is focusing on the economy as well as peace and stability, health, climate change and education. Leaders and representatives from about 50 countries from the African continent, as well as officials from international organizations, are attending.