It started as bartering. Archaeologists have uncovered undeniable evidence that hunter-gatherer groups met up to trade goods. Hunter-gatherers and nomadic groups that still exist today continue to engage in this practice. Then cities sprang up, ships and writing was invented, and long distance trading commenced. Partnerships and allies formed. Civilizations became prosperous. International trade strengthens the economy for everyone involved. A good example is our steel and cars trade with Canada. We import steel from Canada. We use it to make cars. Canada then buys the cars from us. Trump said we don’t need Canada’s steel because we have our own. Unfortunately, that’s not true. The primary ingredient in making…