What influence did the four great inventions have on Western Europe?

Generally speaking, the four great inventions were introduced into western Europe, which dealt a blow to the feudal forces in western Europe and provided scientific and technological conditions for capitalism to defeat feudalism.

Specifically: (1) gunpowder was introduced into Europe, which made Europe gradually lead in weapons manufacturing, made the class decline day by day, and promoted the rapid development of mining and metal industry. ② The introduction of compass provided impetus and guarantee for the rapid development of shipbuilding and navigation in Europe, and provided conditions for Europeans to open up new sea routes, open the world market and carry out colonial expansion. (3) Papermaking and printing were introduced into Europe, which facilitated the spread of cultural knowledge, became a tool for spreading Protestantism, and played a great role in promoting social, political and economic development in Europe. In a word, after the four great inventions were introduced into Europe, they effectively promoted the transformation of Europe from a feudal society to a capitalist society.