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Coherer, iron and mercury: In 1899, the Bengali physicist Jagdish Chandra Bose announced the development of an "iron-mercury-iron coherer with telephone detector" in a paper presented at the Royal Society, London.[19] He also later received U.S. Patent 755,840, "Detector for electrical disturbances" (1904), for a specific electromagnetic receiver. Cotton gin, single-roller: The Ajanta caves of India yield evidence of a single roller cotton gin in use by the 5th century.[20] This cotton gin was used in India until innovations were made in form of foot powered gins.[21] The cotton gin was invented in India as a mechanical device known as charkhi, more technically the "wooden-worm-worked roller". This mechanical device was, in some parts of India, driven by water power.[4] Crescograph: The crescograph, a device for measuring growth in plants, was invented in the early 20th century by the Bengali scientist Jagadish Chandra Bose.[22][

Simputer: The Simputer (acronym for "simple, inexpensive and multilingual people's computer") is a self-contained, open hardware handheld computer, designed for use in environments where computing devices such as personal computers are deemed inappropriate. It was developed in 1999 by 7 scientists of the Indian Institute of Science, Bangalore, led by Dr. Swami Manohar in collaboration with Encore India, a company based in Bangalore.[69][70] Originally envisaged to bring internet to the masses of India, the Simputer and its derivatives are today widely utilized by governments of several Indian states as part of their e-governance drive, the Indian Army, as well as by other public and private organizations.[71][72] Snakes and ladders: Snakes and ladders originated in India as a game based on morality.[73] During British rule of India, this game made its way to England, and was eventually introduced in the United States of America by game-pioneer Milton Bradley in 1943.[73] Stepwell: Earliest clear evidence of the origins of the stepwell is found in the Indus Valley Civilization's archaeological site at Mohenjodaro in Pakistan.[74] The three features of stepwells in the subcontinent are evident from one particular site, abandoned by 2500 BCE, which combines a bathing pool, steps leading down to water, and figures of some religious importance into one structure.[74] The early centuries immediately before the common era saw the Buddhists and the Jains of India adapt the stepwells into their architecture.[74] Both the wells and the form of ritual bathing reached other parts of the world with Buddhism.[74] Rock-cut step wells in the subcontinent date from 200-400 CE.[75] Subsequently the wells at Dhank (550-625 CE) and stepped ponds at Bhinmal (850-950 CE) were constructed.[75] Stupa: The origin of the stupa can be traced to 3rd century BCE India.[76] It was used as a commemorative monument associated with storing sacred relics.[76] The stupa architecture was adopted in Southeast and East Asia, where it evolved into the pagoda, a Buddhist monument used for enshrining sacred relics.[76] Toe stirrup: The earliest known manifestation of the stirrup, which was a toe loop that held the big toe was used in India in as early as 500 BCE[77] or perhaps by 200 BCE according to other sources.[78][79] This ancient stirrup consisted of a looped rope for the big toe which was at the bottom of a saddle made of fibre or leather.[79] Such a configuration made it suitable for the warm climate of most of India where people used to ride horses barefoot.[79] A pair of megalithic double bent iron bars with curvature at each end, excavated in Junapani in the central Indian state of Madhya Pradesh have been regarded as stirrups although they could as well be something else.[80] Buddhist carvings in the temples of Sanchi, Mathura and the Bhaja caves dating back between the 1st and 2nd century BCE figure horsemen riding with elaborate saddles with feet slipped under girths.[81][82][83] Sir John Marshall described the Sanchi relief as "the earliest example by some five centuries of the use of stirrups in any part of the world".[83] In the 1st century CE horse riders in northern India, where winters are sometimes long and cold, were recorded to have their booted feet attached to hooked stirrups.[78] However the form, the conception of the primitive Indian stirrup spread west and east, gradually evolving into the stirrup of today.http://en.wikipe

They lived in beautiful homes, employed great artists, and engaged in intellectual pursuits for both business and pleasure.

One of the cities that exemplified these new trends was Florence.

What the Church got in tithes was kept in huge tithe barns; a lot of the stored grain would have been eaten  by rats or poisoned by their urine.

A failure to pay tithes, so the peasants were told by the Church, would lead to their souls going to Hell after they had died. 

People were too scared not to pay tithes despite the difficulties it meant for them.

You also had to pay for baptisms (if you were not baptised you could not go to Heaven when you died), marriages (there were no couples living together in Medieval times as the Church taught that this equaled sin) and burials - you had to be buried on holy land if your soul was to get to heaven. Whichever way you looked, the Church received money.

The Church also did not have to pay taxes.

Important cities would have cathedrals in them.

To work on the building of a cathedral was a great honour. Those who did the skilled work had to belong to a guild. They would have used just the most basic of tools and less than strong scaffolding to do the ceilings. However, if you were killed in an accident while working in a cathedral or a church, you were guaranteed a place in Heaven - or so the workers were told.

Their sheer size meant that people would see them from miles around, and remind them of the huge power of the Catholic Church in Medieval England.

It would be easy to discuss many of the ancient Greeks inventions that took place which were associated with warfare. Almost everybody is aware of the fact that Alexander the Great and his conquests were some of the most renowned throughout all history. In just a short period of time, he and his army overtook most of the then known world and if his life would not have been cut short, he would have continued his conquests. There were, no doubt, many ancient Greek inventions which helped to make his conquests successful. The one invention that I will discuss, however, is the canon. It is thought that they were one of the first to use a Canon although it did not use gunpowder. By using compressed air, these canons were able to hurl a projectile over long distances.