"historically different" is correct and can be used in written English.
You can use it to indicate that something is distinct from what happened or was the case in the past. For example, "The 2020 election was historically different in many ways, with unprecedented levels of voter turnout and levels of civic engagement."
Historically, different international monetary systems have emphasized different policy mixes.
Leftwing populism is historically different to socialist or social democratic movements.
But there is something historically different about this recession and its aftermath: in the past, local government employment has been almost recession-proof.
A consultant is to be appointed soon to advise the airlines, and joint committees will look at areas of potential co-operation such as schedules and engineering.Sceptics believe that an immediate full merger is unworkable because the airlines' combined workforce of 33,500 will continue to cling defiantly to historically different traditions, pay scales, promotion arrangements, and other benefits.
The period of immigration is an important key characteristic of immigrants' life experiences, since the length of residence is an important factor impacting on the level of integration of immigrants and indicating different waves and conditions of immigration, which have been historically different over decades in the countries.
Although more evidence is required, this suggests the possibility that in the Far East inclusive of Japan, the dispersal process of the phylogenetic type of leprosy is historically different from the occidental world.
Historically three different commercial mixtures, known as pentaBDE, octaBDE, and decaBDE, were sold by different companies under different trade names.
We also hypothesized that earthworm species would affect orchid seed viability and burial differently, and that these effects would differ among soils from successional and mature forests, which have historically supported different earthworm abundances (high and low, respectively; Szlavecz and Csuzdi 2007).
But after investigating the claims, auditors found that the overtime paid to homeland security employees was "historically no different than that paid to state police officers who worked overtime," State Auditor Robert G. Jaekle said last week.
Thus, before explaining that a trait is an adaptation, it is necessary to identify whether it is also shown in ancestors and therefore may have evolved historically for different functions from those that it now serves.
Historically two different approaches have been developed: a statistical approach, based on a stochastic analysis, and a deterministic one involving the actual surfaces topography.
