20 ! why is the louisiana purchase considered one of the greatest buys in american history? use complete sentences.

The Louisiana Purchase is one of the greatest achievements of any American government ever. In the first place, the US acquired a huge territory of 828,000 square miles, the largest land bargain in American history. It was a vast, rich and unexplored area. Secondly, it brougt the US closer to the western part of the continent, closer to the Pacific Ocean. Thirdly, many states that later joined the Union evolved from the original purchased area of Louisiana. And fourthly, the US doubled its size, with its material and strategic advantages, and westward expansion got a phenomenal boost.

Explanation:

following type of cultural development caused people to want and buy new products on the market :

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)