Question

to explain the changes in the importance of sectors?​

Answer 1

Explanation:

Secondary sector gradually became the most important in total production and employment. Hence, over time, a shift had taken place. This means that the importance of the sectors had changed.In the past 100 years, there has been a further shift from secondary to tertiary sector in developed countries.

Answer 2

ᴄʜᴀɴɢᴇ ɪɴ ᴛʜᴇ ɪᴍᴘᴏʀᴛᴀɴᴄᴇ ᴏғ ᴅɪғғᴇʀᴇɴᴛ sᴇᴄᴛᴏʀs ᴀs ᴀɴ ᴇᴄᴏɴᴏᴍʏ ᴅᴇᴠᴇʟᴏᴘs, ɪᴍᴘʀᴏᴠᴇᴅ ᴛᴇᴄʜɴᴏʟᴏɢʏ ᴇɴᴀʙʟᴇs ʟᴇss ʟᴀʙᴏᴜʀ ᴛᴏ ʙᴇ ɴᴇᴇᴅᴇᴅ ɪɴ ᴛʜᴇ ᴘʀɪᴍᴀʀʏ sᴇᴄᴛᴏʀ ᴀɴᴅ ᴀʟʟᴏᴡs ᴍᴏʀᴇ ᴡᴏʀᴋᴇʀs ᴛᴏ ᴘʀᴏᴅᴜᴄᴇ ᴍᴀɴᴜғᴀᴄᴛᴜʀᴇᴅ ɢᴏᴏᴅs. ғᴜʀᴛʜᴇʀ ᴅᴇᴠᴇʟᴏᴘᴍᴇɴᴛ ᴇɴᴀʙʟᴇs ᴛʜᴇ ɢʀᴏᴡᴛʜ ᴏғ ᴛʜᴇ sᴇʀᴠɪᴄᴇ sᴇᴄᴛᴏʀ ᴀɴᴅ ʟᴇɪsᴜʀᴇ ᴀᴄᴛɪᴠɪᴛɪᴇs.

... ✌✌ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ.