Final answer:
The most recent impact on global trade among the given options is the advent of the c. Internet, which has significantly enhanced connectivity and facilitated the flow of transactions worldwide.
Step-by-step explanation:
Of the options provided, the c. Internet has had the most recent impact on global trade. Naval power and colonial empires were influential factors in shaping global trade historically, particularly in the 19th century and early 20th century.
However, since the latter half of the 20th century and especially in the dawn of the 21st century, the rise of the Internet has revolutionized how businesses operate, breaking down geographical barriers and enabling instant communication and transactions across the globe.
Developments in air and sea power have also contributed significantly to global trade by improving the efficiency and scale of trade networks. However, the Internet's capacity to connect markets and facilitate the international flow of goods, services, and capital at unprecedented levels has largely redefined the global trade environment more recently. This digital transformation has dramatically increased interconnectivity, propelling international trade into a new era.