1. Prior to 1947,
2. During 1947-1971,
3. 1971 onwards.
First Phase : Prior to 1947,
In the first Phase, Bangladesh was a part of Bengal province within India and hence it owes and shares the history of Bengal, more generally of India.
History Of India
Stone Age..........70,000-33.000 BCE
Mehrgarh Culture..7,000-3300 BCE
Indus Valley Civilisation..3300-1700 BCELate Harappan Culture..1700-1300 BCE
Iron Age...........................1300-1BCE
Maha Janapadas..........700-300 BCE
Magadha Empire 545-550BCE
Maurya Empire 321-184
Kharavela ...........209-170
Chera Empire....300BCE-1200CE
Chola Empire......300BCE-1279CE
Pandyan Empire.250BCE-1345CE
Satavahana......230 BCE-220CE
Middle Kingdoms.1CE-1279 CE
Kushan Empire..60-240 CE
Gupta Empire.. 280.550
Harsha....590-647
Pala...750-1174
Chalukya..543-753
Rastrakuta...753-982
Western Chalukya..973-1189
Yadava...850-1334
Hoysala..1040-1346
Kakatiya...1083-1323
Islamic Sultanates 1206-1596
Delhi Sultsanates1206-1526
Decan Sultanates,,1490-1596
Ahom Kingdom..1228-1826
Vijayanagara..1336-1646
Mughal......1526-1858
Maratha...1674-1818
Sikh Confederacy.1716-1799
Sikh Empire...1799-1849
Company Rule..1757-1858
British Rule...1858-1947
Partition of India..1947
