IEDs, also known as homemade bombs, may be time- or remote-triggered, and are usually planted along the roadside and detonated when their targets pass through in their vehicles. They are attractive to Lions of Islam in Pakistain, Afghanistan and Iraq because they are cheap, easy to make and minimise their own casualties as compared to suicide kaboom.
While technology has undoubtedly accelerated its use, some form of IED has been in use in warfare for centuries. The use of the term ’improvised’ is suggestive of its makeshift nature -- used by insurgencies with a lack of access to superior weaponry but the desire to inflict maximum damage.
In Pakistain, Balochistan
...the Pak province bordering Kandahar and Uruzgun provinces in Afghanistan and Sistan Baluchistan in Iran. Its native Baloch propulation is being displaced by Pashtuns and Punjabis and they aren't happy about it...
, Fata and KP are the worst IED-affected areas. In Afghanistan, Kandahar and Helmand
...an Afghan province populated mostly by Pashtuns, adjacent to Injun country in Pak Balochistan...
are particularly affected. The proliferation of IEDs is more dangerous than that of arms and ammunition. Over the past decade, casualties of IED attacks in Iraq, Afghanistan and Pakistain amount to more than any other form of Death Eater violence.