What year did the u. s. house of representatives recognize march 14th as national pi day?

I’m pretty sure it was in 1988 if I’m not wrong

i can

explanation:

according to the map, most industrialization in europe occurred in the northwest.

the production of coal and lignite deposits was profitable throughout western europe.

the building of railroads transport goods throughout europe.

according to the map, the population trend indicates that more people are moving into cities.

northwest

coal and lignite depostis

railroads

cities