Answer:
<h3>The invention of gunpowder.</h3>
Explanation:
- The post classical era often called as post ancient period is the period between 6th century AD to 15th century AD. This period is also known as the medieval period and is known for the various discoveries and inventions made during this age.
- It was during the post classical era China invented the four greatest inventions of all time. They were the gunpowder, printing press, paper and compass.
- The invention of gunpowder changed the whole scenario of warfare. It had a very powerful impact on the ways of battles and warfare all over the world.
Answer:
True
Explanation:
Linear Programming is an optimization technique used in a system with multiple constraints that requires a solution. While not always optimal (even though it strives to be), the solution is at least feasible and adequate in managing limited resources in production, for example. LP will, in that sense, always have a single goal specified, trying to simplify a problem with multiple variables.
Answer: Using the military to protect U.S. interests
Explanation:
A P 3 X <3
Social system of rights and duties based on land tenure and personal relationships
The oil-rich countries can help the poor oil ones in many ways, the reality of the world has shown how some countries like Saudi Arabia and Venezuela that are oil-rich countries have helped countries like Argentina, Haiti, Peru, Bolivia, Pakistan , Jamaica, among others; the oil bonanza has helped dozens of other countries to build houses, roads, improve electrical systems,reduce deseases, improve their economy, cancel external debts, etc., oil is a resource with multiple derivatives, which they haven´t been able to be replaced in its entirety, and although it is a resource owned by the country where it is located, these, in some opportunities have benefited other poorer nations with it.
