In Brazil¡¯s westernmost state of Acre, a gleaming new section of highway is being built to carry President Luiz Inacio Lula da Silva¡¯s hopes of economic transformation.

It also risks bearing the full weight of Donald Trump¡¯s protectionist policies.

The construction of a bridge and access roads over a 10-kilometer corridor leading to the Peruvian border may seem like a modest project for such a load. Its significance lies in being part of a whole network of new or upgraded arteries intended to link Brazil¡¯s vast territory to its South American neighbors, from there to the Pacific Ocean ¡ª and on to China.