limestone caves
It has helped many people
The Louis and Clark Expedition helped prove that there was not an all water route across the Continent
Colonies provided a market for finished goods or Colonies provided cheap labor. Colonies provided England with raw materials.
Access to easily domesticated animals and grains. The animals provided power: Oxen are far more effective for ploughing and hauling than humans. Grain provides easy to grow, high energy foods, allowing a move away from subsistence farming, giving rise to cities, specialisation of skills and 'civilisation'.
Navel Bases
It provided defeat against the British. Because the British won Victory of Breed's Hill, the American troops were determined to win over them.
Africa
The Mediterranean.
The link provided has the info you requested.
It has helped many people
France provided the weapons for the first American units.
On the west the boundary was the Rocky Mountains and on the east the boundary was the Mississippi River. thank you
vatos locos
Slavery has been practiced by most peoples and cultures across the world in times past. Whole economies were based on it including the Roman Empire, The American South, and Many African and Arab cultures. Slavery provided the slavers with a free workforce (apart from food and housing) but caused other problems.
The Tigris and Euphrates, or the Nile in Egypt helped develop cultures that were close to these rivers, because they provided water to drink, fertile soil, and transportation.
The American recovery and reinvestment act provided support by creating and saving jobs. Also, it provided relief programs.
Greeks