Economic development is necessary if we want to improve society. There comes a time when the old must give way to the new, and it is not possible     1     everything from our past as we move towards the future. Finding and keeping the right     2     between progress and the protection of cultural sites can be a big challenge. 

Big challenges, however, can sometimes lead to great     3    . In the 1950s, the Egyptian government wanted to build a new dam across the Nile in order to control floods, produce electricity, and supply water to more farmers in the area. But the     4     led to protests. Water from the dam would     5     damage a number of temples and destroy cultural relics that were an important part of Egypt’s cultural heritage. After listening to the scientists who had studied the problem, and citizens who lived near the dam, the government     6     to the United Nations for help in 1959. 

A committee     7     to limit damage to the Egyptian buildings and prevent the loss of cultural relics. The group asked for     8     from different departments and raised funds within the international community. Experts investigated the     9    , conducted several tests, and then made a proposal for how the buildings could be saved. Finally, a     10     was signed, and the work began in 1960.