Radio
technology that allowed governments and businesses to spread news, propaganda, and entertainment to large audiences quickly in the 1900s
Internet
a global network that made communication instant and helped expand trade, education, and globalization
Green Revolution
new farming techniques (like better seeds and fertilizers) that greatly increased food production, especially in developing countries
Crossbreeding
breeding different plants of animals to create stronger or higher-yield varieties
Genetic Engineering
scientists directly change DNA to improve crops (like making them pest-resistant) or develop medicines
Shipping Containers
standard metal boxes that made it cheaper and faster to move goods across the world, boosting global trade
Antibiotic
medicines that treat bacterial infections, lowering death rates and increasing population growth
Birth Control
methods that prevent pregnancy, giving women more control and lowering population growth rates
Fertility Rates
the average number of children per woman; tends to drop with education, urbanization, and access to birth control
Vaccines
medicines that prevent diseases, reducing death rates and helping populations grow