they were white clothes because they think its clean energy, but the energy depends on what the persons feeling like.
When muslims dress for the Hajj, they wear white clothing for 5 days.
The name of the white cloths that Muslims wear is called Iran. Which is a piece of white cloths that men wear, and the ladies wear black or white.
They wear as they wear anywhere else except if they are om hajj (or pilgrimage) then they wear what is required during hajj. See question below.
Muslims wearr ahram during offering hajj
That is not true. There is nothing that may prevent Muslims from doing so. However, Muslims never wear underwear on Hajj as that is one of the rules/ traditions. It is the same in Pakistan and many hot countries where it is more healthy not to wear, and I prefer not to. But no religious reason except for Hajj.
Hajj is a kind of worship. The Muslims perform Hajj. It has nothing to do anything with soldiering or fighting. It is Jihad in which armed men take part, not Hajj.
It is the fifth pillar of Islam. Hajj is obligatory on Muslims (men/women) once in lifetime provided they can afford.
Non Muslims don't go on Hajj.
Muslims visit Mecca and Medina during hajj.
Hajj four facts Where does Muslims do Hajj? Muslims pray in the Kaaba. Why does Muslims do Hajj? Once, Mohamed sad to Muslims, that third best think after belief to Allah is excellent Hajj. What are they doing when they get there? They are praying & praise Allah-it is calling Tawaf
They do all Hajj rituals as men with no single difference except that they don't wear a special clothing for hajj as men but they wear the per religion licit clothing that they wear in their normal living days (with face and hands uncovered). Refer to related question below.
how do muslims dress for the hajj