Communication
This early 20th-century invention revolutionized mass communication by transmitting audio signals wirelessly.
What is the radio?
These large standardized containers revolutionized global trade by simplifying the loading and unloading of goods.
What are shipping containers?
This fossil fuel became the dominant global energy source in the 20th century, powering vehicles, factories, and homes.
What is oil?
This medical breakthrough involves using weakened or inactive pathogens to stimulate immunity against diseases.
What is vaccination?
This global network, developed in the late 20th century, transformed how information is shared and accessed worldwide.
What is the Internet?
The widespread use of this mode of transportation in the 20th century significantly reduced travel time across continents.
What is air travel?
This energy source, developed during World War II and later used for electricity, relies on splitting atoms to release power.
What is nuclear energy?
This type of medication, first widely used in the 20th century, combats bacterial infections and has saved countless lives.
What are antibiotics?
This mid-20th-century invention greatly sped up global communication by transmitting data through space instead of wires.
What is the satellite?
The expansion of this transportation industry, especially after World War II, made international travel accessible to the masses.
What is commercial air travel?
These atmospheric substances, including carbon dioxide and methane, trap heat and contribute to global warming.
What are greenhouse gases?
This medical innovation gave people, especially women, greater control over reproduction, contributing to lower birth rates and social changes worldwide.
What is birth control?
These portable devices revolutionized personal communication by allowing users to call and text without landlines.
What are mobile phones?
This form of high-speed transportation, developed in countries like Japan, significantly reduced travel time between major cities.
What is the bullet train?
Concerns about fossil fuel dependency and climate change led to international efforts to develop and adopt these cleaner, sustainable power sources.
What are renewable energy sources?
The increased availability of birth control in the 20th century contributed to this major global demographic trend, especially in industrialized nations.
What is a decline in fertility rates?
This online platform, launched in the 2000s, became symbolic of the rise of social media and instant global connectivity.
What is Facebook?
This 20th-century infrastructure project connected the eastern and western parts of the United States, promoting faster movement of people and goods.
What is the Interstate Highway System?
This term describes the gradual increase in Earth's average temperature due to the buildup of greenhouse gases like carbon dioxide and methane in the atmosphere.
What is global warming?
The first antibiotic, a useful agent in curing bacterial infections
What is penicillin?