Electricty, steel, chemical instrudies, railroads steamships, telegraph, textile mills, n<span>itroglycerin and dynamite and submarine telegraphs cables. They revolutionized everyday life and transformed the economy. Electricity increases production and makes safer cities.</span>
The use of atomic bombs during World War II led to "<span>an arms race between the United States and Soviet Union," since these were the only major countries with the capability to make atomic weapons for quite some time. </span>