In 1850, news from New York took weeks to reach San Francisco by ship. Today a livestream from New York appears there almost instantly. What concept fits this change?

Before the late 1950s, most travelers crossed the Atlantic from London to New York by ocean liner, a trip of several days. Which change cut that travel time to a few hours?

A merchant in Shanghai once waited weeks for price news from Rotterdam by ship mail. Now market updates arrive on a phone in seconds. Which statement best describes what changed?

In the 1840s, news carried by mail from Washington, D.C., to New Orleans took many days. Electronic messages now arrive there in seconds. How does this change affect the spread of ideas between the cities?

A trip from Tokyo to Seoul that once required a long sea journey can now be made by jet in a few hours, while the cities remain the same distance apart on a map. What is this?

A design firm in Paris once mailed sketches to Montreal and waited a week. Now shared files arrive there in seconds. How has the friction of distance between the two cities changed for this firm?

In 1850, a letter from Boston to Buenos Aires might take over a month. An email between those cities now arrives almost immediately. How has the distance between the cities changed?

A dance created in Seoul appears in Lagos two weeks later after millions copy short videos posted online. What carried the practice across regions?

A food-truck ordering style used in Los Angeles is adopted in Berlin after chefs watch tutorials and customer clips on Instagram. No one moves between the cities. Which kind of diffusion is this?

A street fashion from Milan becomes popular in São Paulo within days after influencers post daily outfit videos. What does this suggest about distance decay for popular culture today?

In the 1990s, viewers in India watched a British television show as it aired, and Indian broadcasters later remade its format. What technology let Indian viewers watch it as it aired?

A sneaker style designed in Jakarta reaches stores in Dubai and Johannesburg in the same season because finished shoes move cheaply and quickly between continents. Which technology helped the material culture spread?

A festival game from Mexico City is demonstrated in person at conventions in Madrid and Chicago because performers can get there and back over a weekend. What most directly helped it spread?

In a county where many homes lack reliable broadband, online language lessons spread quickly in the city but slowly in nearby villages. Which concept best explains the difference?

A museum posts free virtual tours, but students in a mountain district with weak cell service rarely view them while students downtown use them often. Which change would most directly narrow this gap?

A government moves permit applications to a smartphone app, but older residents without smartphones use the service less than younger urban residents. Which part of the digital divide does this show?

A streaming service releases a new music documentary worldwide, but subscribers in low-income neighborhoods with expensive data plans watch far less than wealthier subscribers. How does this affect the film's spread?

A school district adopts cloud textbooks, but rural students without home internet must wait to use a library connection while suburban students study at night. At what scale is this digital divide being observed?

A health campaign spreads by text alerts in Nairobi, but people in informal settlements with shared phones receive fewer messages. What does this case show about the digital divide?

Coffee shops in Dubai, Toronto, and Singapore now use similar playlists, ordering apps, and store designs after chains share branding across continents. What cultural outcome is most likely?

Teenagers in Mexico City, Manila, and Madrid follow the same online gaming slang and tournament schedules. What concern do critics raise about this kind of trend?

A music style from Jamaica blends with electronic dance music in London after artists collaborate online, creating a mixed sound. Which outcome best describes this result?

A local bakery in Bangkok keeps traditional flavors but changes its ordering system after customers learn mobile pickup habits from global chains. Which outcome is shown?

After years of global media advertising, a regional clothing company drops its local dress styles and sells only the same fast-fashion items as foreign chains. Which outcome best fits?

A city festival now features Korean pop dance, West African food stalls, Mexican folk art, and local bands after migrants and online networks connect residents. Which outcome is shown?