The Suez Canal is an important waterway that connects the Mediterranean Sea and the Red Sea. It was indeed constructed in 1869, making option 1 correct. Option 2 is also correct, as the canal provides a direct route for ships traveling between these two seas.

However, option 3 is not correct. The Suez Canal does not have a six lock system. Instead, it is a sea-level canal, which means that there are no locks to raise or lower ships to different levels. Ships simply sail through the canal without the need for any lock system.

Option 4 is correct as well. The Suez Canal has indeed provided Europe with a new gateway to the Indian Ocean. Prior to the construction of the canal, ships had to travel around the Cape of Good Hope in Africa, adding significant time and distance to their journeys. With the opening of the Suez Canal, ships could now take a much shorter route, saving both time and money.

In summary, the Suez Canal was constructed in 1869 and connects the Mediterranean Sea and the Red Sea. It does not have a six lock system but is instead a sea-level canal. It has also provided Europe with a new gateway to the Indian Ocean.