Question

why was America been isolated for long period ?​

Answer 1

Until Japan came crashing southward, the rest of the world seemed far away from Australia. From the west coast to South Africa lay nearly 5,000 miles of ocean, and Ceylon was 3,000 miles away. From Sydney to London the distance is 12,500 miles round the Cape of Good Hope and 11,500 through the Suez or Panama canals. North America, South America, and South Africa were three weeks away from Australia, and Britain was five to seven’ weeks away, even on the speediest ships available. In the days of sailing ships these times were half as long again. Southward the next-door neighbor was Antarctica. Northward there was little bond of trade or travel. The dreary northern wastes isolated Australia from contact with Asia.