How was American foreign policy after the civil war?

Diplomatic relations ran hot and cold after the civil war. There were tensions between the US and Canada over Canada, allowing Vermont to be attacked. In retaliation, the US looked the other way when Irish activists, the Fenians, attacked Canada. Meanwhile, in the 1880â??s, the US abandoned its protectionism policy and embraced trade with Latin America. However, his successor quickly reversed this trade policy.