<span>because of the Germans' decision to resume the policy of unrestricted submarine warfare.
Hope this helps.</span>
The architecture or wide columns and towering arcs
Answer: A. Global Positioning Satellite (GPS) and two-way radio
The two instruments that were used and that were made navigation convenient and easier in 1990s are the GPS and the two-way radio. GPS is a tracking system using Global Navigation Satellite System.
Answer:
Explanati Ports have long played a vital role in the international transport system, but have become increasingly important since the second half of the twentieth century with the rapid globalization of the world economy and expansion of world trade. hope this helps<3