An ideological war existed? Sorry, its just your format is kind of awkward is all.
The domestic manufacture of new machine guns that civilians could purchase was effectively banned by language in the Firearm Owners Protection Act of 1986 (also known as "McClure-Volkmer"). The language was added in an amendment from William J. Hughes and referred to as the Hughes Amendment.
Answer:
vaccination
Explanation:
Louis Pasteur had been working to find a vaccine that would cure cholera in chickens. His lab assistant gave an older, weaker strain of the disease to the birds. When these birds did not die Pasteur began to rethink his ideas a came up with our current method of administering vaccinations.
Answer: The United States' use of nuclear weapons to end World War II led to a determined effort by the Soviet Union to acquire those weapons, leading to a long-running nuclear arms race between the two superpowers. The Soviet Union conducted its first nuclear test in 1949.
Explanation: ww2
