Nanoparticles also have different properties to the same substance in normal-sized pieces. For example, titanium dioxide is a white solid used in house paint and certain sweet-coated chocolates. Titanium dioxide nanoparticles are so small they do not reflect visible light, so cannot be seen.
legal Definition of cession 1: an act of ceding : a yielding (as of property) to another: as a in the civil law of Louisiana: assignment or transfer of property rights by a debtor to a creditor
Annexation differs from cession, because unlike cession where territory is given or sold through treaty, annexation is a unilateral act where territory is seized and held by one state. Annexation can be legitimized via general recognition by international bodies (i.e. other countries and intergovernmental organisations).