NEW ORLEANS (AP).- Two hundred years ago, the first steamboat meandered down the Ohio and Mississippi rivers, taking more than four months to reach New Orleans. The journey was marked by Indians chasing the paddle-wheeled boat, a baby’s birth and an earthquake that made the Mississippi flow in the opposite direction for 45 miles. Despite it all, the steamboat New Orleans successfully sailed into the city it was named for, revolutionizing business for the port, and opening up the Midwest to economic growth. The 200th anniversary of the first docking was celebrated Saturday along the banks of the Mississippi and at the Cabildo museum in the French Quarter. The museum has a related exhibit: New Orleans Bound 1812: The Steamboat that Changed America. “A ship capable of sailing up the Mississippi had never sailed down it before,” said Frank Courtenay, a maritime attorney and president of the