Italy

Before WWII in northern Italy, people have preferred espresso using dark roast coffee.
In the other side before 1960s in the US, people preferred light roasted coffee.
After the term when peet's coffee showed up in Carfornia, Italian Roast began to get popularity.
And then Starbucks make it gain major recognition in the US coffee market.

Belle Époque ended up by World War I starting.
However, espresso remained popular in Italy.
Luigi Bezzera, Desiderio Pavoni, coffee machine developers and coffee roaster such as Luigi Lavazza kept promoting espresso, which remained popular around bars in nortern  industorial cities or large cities in the era in Italy.

In the early 1900s, Italian espresso machine innovators such as Pavoni began to introduce the machine and cafes began to appear all over Northern Italy.These bars began to supply espresso coffee.  

These bars purchased roasted coffee bean from roasters.
One of the  dominant roaster is Luigi Lavazza.

Luigi Lavazza was an Italian entrepreneur who founded the famous Lavazza coffee company that bears his name today.

Desiderio Pavoni was a pivotal figure in espresso history who transformed Luigi Bezzera's invention into a commercial success. 
Desiderio Pavoni purchased Luigi Bezzera's patent in 1903, recognizing the potential that Bezzera himself couldn't capitalize on due to lack of financial resources and marketing expertise. 
In 1905, Pavoni founded the La Pavoni company and began producing the espresso machine industrially, manufacturing one machine daily in a small workshop in Via Parini, Milan.

In Europe, the period from around 1889, when the Paris World's Fair, where the Eiffel Tower was unveiled, to the outbreak of World War I is known as the Belle Époque (Beautiful Era).
This was also a period when various technologies developed due to the Industrial Revolution and artistic movements such as Art Nouveau emerged.
During this time, Luigi Bezzera developed a new espresso machine in Italy.

How was Espresso Machine born pre war, which is perfected by Achille Gaggia right after WWII in Italy?
 Angelo Moriondo was a pioneering Italian inventor who created the world's first espresso machine in 1884. Here's his remarkable story:

Giovanni Achille Gaggia (1895–1961) was an Italian inventor who revolutionized espresso coffee. 
Working as a barista in his family's coffee bar, Caffè Achille, in Milan during the 1930s, he became dissatisfied with the bitter, burnt taste of coffee produced by the steam machines of that era .

After World War II、many Amecrian Soldiers spread Instant coffee like Nescafe、and it was included in Care packages delivered to civilian populations around in Western Europe, Japan right after WWII and so on.
But in Japn, instant coffee is not spread soon, because of limitation of import of coffee regulation.

After that, in the 1960s, when restrictions on imports of instant coffee were lifted in Japan, instant coffee became popular.