If magellan had not found the strait that he traveled through to reach the pacific, could he still have achieved his goal? explain

He might have been able to since further South there was what is now known as Drake Passage; the open ocean area between the southern tip of South America and the Shetland Islands of Antarctica. However, it all depends on the time of the year, since during the Austral winter his wooden, carrack ships would have been no match for the rough seas and the icebergs.

The risk would have been too great and his ships might have been pushed further south towards Antarctica. It was not uncommon for ships in that area to be sunk by the elements and ship men were usually weary when going through such areas.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.