The US economy after world war 1 I relied in large part on

a) loans from abroad

b) construction

c) inflation

d) farming

b) construction

Explanation:

The world war greatly favored the US economy, the main supplier of raw materials, industrial products, etc ... It favored the extraction of coal, iron ore, steel, agriculture and the development of its fleet ... It happened to be creditor of Europe and with the amounts of gold that accumulated caused monetary instability in this in the 20s. From 1923 to 1929 the US production increased by 64% and its income by 30% which consolidated a very strong domestic purchasing power in the country.

The correct answer is option B:

B. Construction.

The us economy after world war 1 relied in large part on "inflation" since this was a major symptom that led up to the Great Depression and the 1920s bubble.