Hey i need help please

In the 1800s, what route did pioneers follow to settle the pacific coast? the mississippi river the oregon trail the wilderness road the cumberland gapin the 1800s, what route did pioneers follow to settle the pacific coast? the mississippi river the oregon trail the wilderness road the cumberland gap

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

Acurator decides to display an eighteenth-century painting in a windowless room with controlled temperature and humidity. pick the answer that best describes the reasons for her choice: (1 point) 1)the curator wants to make sure that the temperature and humidity are comfortable for visitors. 2)keeping the temperature and humidity at a set level will save money. 3)the ultraviolet rays will damage the painting by fading and flaking the paint. 4)ultraviolet rays will fade the paint pigment and high temperature and humidity will damage the paint.