Answer:
Pour acetone and antkiller into the river. Rent a pickup truck, recruit a few of your friends using pizza, put on some latex gloves and take trash bags out of dumpsters. Proceed to empty the bags into the river. If you want to reduce pollution, lobby the local goverment to make laws against dumping in the river.
Number 1 -true number 2- true number 3 -false
Which war? WWI: We were isolationists until illegal German U-boats sank a United States commercial ship called the Lusitania.
WWII: We were isolationists until December 7, 1941 when the Japanese air fleet surprise attacked and bombed us at Pearl Harbor.
Heavy rainfall or violent wave activity can cause "floods", since if a particular area that is affected by these weather conditions lacks the drainage resources necessary to reduce the water build up then it has nowhere to go.