He was struggling to find employment. This could be wrong. But from my memory i think this is write.
"C.watts steam engine" was considered to be the greatest invention of the Industrial Revolution, since this had great implications not only for transportation but for manufacturing and a plethora of other industries.
Chocolate was first discovered by Indian tribes in South America, when it was used as a spice on their food and was rubbed onto skin to protect from the sun.
Answer: 2nd and 4th options.
Explanation:
The Vietnam War was the United State's attempt to stop communism from spreading across Eastern Asia. At the time it was believed that if Vietnam fell to communism, a Domino Effect would occur, and many states around Vietnam would fall to communism. While the US sent many troops, more than 500,000 by 1965, the war effort ended up being pointless and Vietnam fell to communism in the 1970s. The US left Vietnam in 1973, leaving South Vietnam to fall by 1975.