Setting up shipping zones and pricing is the crux of e-commerce. This could either lead into a sale or cart abandonment. Hence, shipping settings should be configured very carefully.

In order to setup shipping settings, Business settings -> Shipping settings


Further, you would have an option to 'Add a shipping zone'

The global shipping can be enabled by adding countries other than country of business origin. For eg: The country of business is India. The global shipping price can be defined same for all the countries or by selecting specific countries and states. The price would be based on product weight or product price. 

Once the shipping zone and price has been defined and saved, it would appear as shown in the screenshot below. Thus enabling global shipping for your business.