Could you please answer these questions in complete sentence and I swear I’ll mark you brainlist please

Internal combustion engines

If i remember correctly it was caused by people hurling bodies at a country for some reason and them they all became infected

The question of what caused the full effects of the radical stage, also called the second french revolution by some historians, which shook the political and social reforms in france have caught the attention of many scholars, particularly because of principles implemented during this stage which is contradictory to the fundamental principle of the french revolution itself, by using dictatorship to create equality.