die Folgezeit
subsequent period
The period of time that follows a specific event or era.
In der Folgezeit nach dem Krieg wurde das Land langsam wieder aufgebaut.
In the period following the war, the country was slowly rebuilt.

subsequent period
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subsequent period
The period of time that follows a specific event or era.
In der Folgezeit nach dem Krieg wurde das Land langsam wieder aufgebaut.
In the period following the war, the country was slowly rebuilt.

This word is a clear compound of 'die Folge' (the consequence/result) and 'die Zeit' (the time/period). It literally means 'the time that follows' and is therefore easy to understand.
Die Erfindung des Buchdrucks veränderte die Welt in der Folgezeit komplett.
The invention of the printing press completely changed the world in the period that followed.
'Folgezeit' (subsequent period) is almost always used in the fixed phrase 'in der Folgezeit' (in the period that followed). This expression often introduces a sentence or subordinate clause that describes the consequences of an event.
Das Unternehmen machte große Verluste. In der Folgezeit mussten viele Mitarbeiter entlassen werden.
The company made large losses. In the period that followed, many employees had to be laid off.
The word 'Folgezeit' (subsequent period) belongs more to written language and is often used in historical, journalistic, or formal texts. It is less common in spoken language.
In der Folgezeit der industriellen Revolution entstanden neue soziale Klassen.
In the period following the Industrial Revolution, new social classes emerged.
future
'die Zukunft' and 'die Folgezeit' both talk about a time that has not yet passed. 'Die Zukunft' is general: it can mean tomorrow, many years from now, or later life. 'Die Folgezeit' more specifically means the period after a particular event. That event is the starting point. For this reason, 'Folgezeit' sounds more factual and is often used in reports or explanations. Learners may confuse the words because both point forward in time. If no specific event has been mentioned beforehand, 'Zukunft' usually fits better.

Nach der Operation braucht er in der Folgezeit viel Ruhe.
After the operation, he needs a lot of rest in the period that follows.
Zur Planung für die Zukunft schreibt Anna heute ihre wichtigsten Ziele auf.
To plan for the future, Anna writes down her most important goals today.