No. Many of the longest rivers in the world flow noth, including the longest the Nile. Others include Yenisei_River, Angara_River, Selengaand Lena in Russia, and the Yukon in Alaska. Many huge Canadian rivers flow north too. the Seine and Rhine flow north in Europe.
No. Whoever says that does not know what they are talking about. The Mississippi River, for example, flows South, Southeast, and East.
Rivers can flow in any direction.
Actually many rivers run north in North America. Water has no sense of direction. If flows downhill by gravity. Most rivers east of the Rocky Mountains do flow in a southerly direction because the elevation is lower to the south and they are flowing toward the Gulf of Mexico. Source: Riverlorian.com
All rivers flow down slope and usually towards the Sea.
The bay that all of India's rivers flow into is the Bay of Bengal. Indian rivers are regarded sacred and have spiritual importance.
They all flow into the Pacific.
All of the rivers in Siberia tend to flow north. These rivers flow north as they being pulled to drain into the Arctic Ocean.
I would think they all flow to the Gulf of Mexico.
Downward
All of the rivers in Wisconsin flow into the Gulf or the Great Lakes. One of the largest rivers in Wisconsin, that does flow into the Gulf of Mexico, is the Mississippi River.
Surely they all do, I know some flow into other rivers, but they all reach the sea in one form or another.
No. Easy answer. Rivers flow from higher elevations to lower elevations, typically to larger bodies of water.
These rivers all flow through France.
Most rivers do not flow to the south. Rivers can only flow from areas of higher elevation to lower elevations, taking the route of least resistence. This is regardless of whether rivers are in the northern or southern hemisphere.