The main cause of death in the civil war was disease.
Clothes were not clean
Food was not sanitary
It was not a fun place
England proved to be a strong super power by conquering lands and by acquiring natural resources. England also imperialized many countries benefitting from them through mercantilism. England increased in navy and their economy prospered.
The invention of the cotton gin.
According too the nebular hypothesis Helium and hydrogen
The EU, Is a Conglomeration of A majority of the European countries, It serves by interconnecting Europe By trade, Currency and Armed Forces.