Answer:
It created new shipping and trade routes
Explanation:
The Grand Exchange, sometimes also known as the Columbian Exchange, radically changed the world. The Old World (Eurasia and Africa) created new relations with the New World (the continent of the Americas). These relations were mainly trade relations, which also led to political relations.
The new trade networks allowed the exchange of American goods to the Old World and viceversa, modifying diets, cultures, political regimes, and so on.
During the nineteenth century, it was "India" that experienced a decrease in industrial production, since there industrial production had never been that high to begin with relative to many other nations.
It was a more effective way to kill. It could kill a large amount of people. It would make them suffer more. You could see their eyes go away. Really bad in world war I