Five geographic questions.

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One
On mainland South America what countries do NOT border Brazil?
Two
Europe: what seven-letter word gives a name to both an Irish province and a city in North Rhine-Westphalia, Germany?
Three
In Asia, what is the capital of Mongolia?
Four
This quote from Wikipedia refers to what Australian city?
The city has been almost entirely rebuilt four times, following devastation caused by a cyclone in 1897, another one in 1937, Japanese air raids during World War II, and Cyclone Tracy in 1974
— Wikipedia
Five
Of the two major tributaries of Africa’s River Nile, which is the longer?
Good luck! I’ll post the answers later.
