If you want to start with the end of Ice Age, one think is clear, we
can't talk about France as an homogeneous region. Taking it as the
Roman Gaul, from the Rhin to the Pyrenees and Alps, a reasonable
geographical and historical entity, we have the following sequence:
Epi-Paleolithic: Magdalenian culture splits in two "microlithic" cultures:
Sauveterre-Tardenois in the north (from the Channel to NW Hungary) and
Azilian in the south (from Northern Spain to Liguria). This happens c. 8000 BCE.
Early Neolithic (since 5000): "Gaul" recieves two separate waves of Neolithic difussion (with some localized migration maybe):
- Danubian (Linear pottery) in the NE and North
- Mediterranean (Cardium pottery) in the SE
The Western areas remain apart and only slowly become agricultural.
They belong to the Atlantic region of Europe, more deeply related to
their paleolithic roots. The North of France and Belgium are mixed
areas as well.
Late Neolithic (c. 3500): SE France developes the
Chassey culture
that shows a clearly more advanced Neolithic economy, with silex mines
and stone-tools centers of production. This important culture will
influence strongly its Mediterranean neighbours of Switzerland,
northern Italy and NE Spain. It breaks apart in some sort of wars.
Early Chalcolithic (since 3000): Most important is the central-western culture of
Armorican Megalithism.
Related to other Atlantic Megalithic cultures but with many rare
peculiarities. Megalithism spreads to all Gaul in diferent dates.
Middle Chalcolithic
(c. 2600-2400): Danubians, already divided in several groups, suffer
many confuse changes that seem to me like inter-tribal conflicts. Some
Danubians from North France migrate into West France when
Seine-Oise-Maine
(Danubian) culture is founded. The pressure of Seine-Oise-Marne over
Western France becomes clearer in the following centuries.
Late Chalcolithic (c. 2400-1700): A new local warring culture appears c. 2600 in Dordogne. In the following centuries
Artenac culture
takes over all the SW and West regions and even goes further to the
north up to the Rhin, where a subgroup is created. I understand that
these
Artenacians are the direct predecessors of
Aquitanians and Basques.
Another importan influence in this phase is the
Bell-Beaker
pehnomenon that, from its Central European origins, expands into most
Western Europe. It's believed they were some kind of merchant guild, as
they don't substitute the cultures they appear in.
Bronze Age: Around 1300, the people of Central-European
Urnfields culture, believed to be mostly
Celts, advance by the west bank of the Rhone into Auvergne and Languedoc. They also march into Belgium and parts of Northern France.
Since then the Atlantic peoples also adopt Bronze.
The Atlantic region center (if this term is appliable) seems to move
from Portugal to Britain.
Iron Age: Around 800 BCE Celts and Illyrians adopt the
Hallstatt culture, including the first Iron tools and weapons. Some further Celtic expansion happens in this early Iron period.
C. 600
Marseilles is founded by the Greeks. It will be a major comercial and cultural center since then.
Since 400 the now Celtic only culture of
La Tne
starts a great but gradual expansion. Pre-IE groups such as Aquitanians
and Ligurians are dirven back to their historical regions. Their
migration into Britain would bring back a new form of religiosity:
druidism.
And then, in
Ancient History, the major influences were, without doubt
Roman and
Frankish (Germanic), though other Germanic trbes such as Goths, Burgundians, etc. shouldn't be ignored.