The Egyptian government took control of the canal.
When a country nationalizes somethings, that just means that they take it from its owner, in some cases they buy it form the owner, and it´s now administrated by the state, many companies in the world provide and help countries to increase its national budget by bein nationalized by the State, teh Panama Canal is another example of that.
There is an agreement of price and quantity in the market therefore all market forces stabilized and reached a price that consumers are willing to pay for goods and producers a price at which they are willing to produce in order to make a profit