Roosevelt, Eisenhower, and Rolling Adjustment are all terms for what, otherwise known as economic downturns?

Roosevelt, Eisenhower, and Rolling Adjustment are all terms for "recession", otherwise known as economic downturns.

Explanation:

The Roosevelt recession relates to a time from mid-1937 to 1938 when the Great Depression economic recovery briefly halted, for a span of around 13 months. In 1958, the recession, also recognized as the Eisenhower Crisis, was a significant decline in the global economy. The recession's impact extended to Europe and Canada outside the boundaries of the United States, forcing several companies to close down.

When the downturn impacts only specific aspects of the economy at a period, is understood as rolling adjustment. The recession will 'roll' into another aspect of the economy as one sector joins reconstruction. All in all, it occur irrespective of national or state-wide economic contraction, and the consequences might not be on national economic steps, for an instance GDP.

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.