Indo-european written language that developed in the indus valley around 1000 b.c.

The correct answer is B)  It helped establish transatlantic trade routes to the Americas.

The Columbian exchange affected trade in that  It helped establish transatlantic trade routes to the Americas.

The name was taken from the explorer Cristopher Columbus. The Columbian exchange was the trade between America, Europe, and Africa during the 15th and 16th centuries. Everything was traded and transported through the Columbian exchange: goods, animals, people, minerals, and plants. Historian Alfred W. Crosby was the one who coined the term in his book "The Columbian Exchange" written in 1972. He even added that diseases were transported in ships via plants and livestock.